/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package java.lang;
import java.io.Serializable;
import java.util.Arrays;
/**
* The wrapper for the primitive type {@code char}. This class also provides a
* number of utility methods for working with characters.
*
* <p>Character data is kept up to date as Unicode evolves.
* See the <a href="../util/Locale.html#locale_data">Locale data</a> section of
* the {@code Locale} documentation for details of the Unicode versions implemented by current
* and historical Android releases.
*
* <p>The Unicode specification, character tables, and other information are available at
* <a href="http://www.unicode.org/">http://www.unicode.org/</a>.
*
* <p>Unicode characters are referred to as <i>code points</i>. The range of valid
* code points is U+0000 to U+10FFFF. The <i>Basic Multilingual Plane (BMP)</i>
* is the code point range U+0000 to U+FFFF. Characters above the BMP are
* referred to as <i>Supplementary Characters</i>. On the Java platform, UTF-16
* encoding and {@code char} pairs are used to represent code points in the
* supplementary range. A pair of {@code char} values that represent a
* supplementary character are made up of a <i>high surrogate</i> with a value
* range of 0xD800 to 0xDBFF and a <i>low surrogate</i> with a value range of
* 0xDC00 to 0xDFFF.
* <p>
* On the Java platform a {@code char} value represents either a single BMP code
* point or a UTF-16 unit that's part of a surrogate pair. The {@code int} type
* is used to represent all Unicode code points.
*
* <a name="unicode_categories"><h3>Unicode categories</h3></a>
* <p>Here's a list of the Unicode character categories and the corresponding Java constant,
* grouped semantically to provide a convenient overview. This table is also useful in
* conjunction with {@code \p} and {@code \P} in {@link java.util.regex.Pattern regular expressions}.
* <span class="datatable">
* <style type="text/css">
* .datatable td { padding-right: 20px; }
* </style>
* <p><table>
* <tr> <td> Cn </td> <td> Unassigned </td> <td>{@link #UNASSIGNED}</td> </tr>
* <tr> <td> Cc </td> <td> Control </td> <td>{@link #CONTROL}</td> </tr>
* <tr> <td> Cf </td> <td> Format </td> <td>{@link #FORMAT}</td> </tr>
* <tr> <td> Co </td> <td> Private use </td> <td>{@link #PRIVATE_USE}</td> </tr>
* <tr> <td> Cs </td> <td> Surrogate </td> <td>{@link #SURROGATE}</td> </tr>
* <tr> <td><br></td> </tr>
* <tr> <td> Lu </td> <td> Uppercase letter </td> <td>{@link #UPPERCASE_LETTER}</td> </tr>
* <tr> <td> Ll </td> <td> Lowercase letter </td> <td>{@link #LOWERCASE_LETTER}</td> </tr>
* <tr> <td> Lt </td> <td> Titlecase letter </td> <td>{@link #TITLECASE_LETTER}</td> </tr>
* <tr> <td> Lm </td> <td> Modifier letter </td> <td>{@link #MODIFIER_LETTER}</td> </tr>
* <tr> <td> Lo </td> <td> Other letter </td> <td>{@link #OTHER_LETTER}</td> </tr>
* <tr> <td><br></td> </tr>
* <tr> <td> Mn </td> <td> Non-spacing mark </td> <td>{@link #NON_SPACING_MARK}</td> </tr>
* <tr> <td> Me </td> <td> Enclosing mark </td> <td>{@link #ENCLOSING_MARK}</td> </tr>
* <tr> <td> Mc </td> <td> Combining spacing mark </td> <td>{@link #COMBINING_SPACING_MARK}</td> </tr>
* <tr> <td><br></td> </tr>
* <tr> <td> Nd </td> <td> Decimal digit number </td> <td>{@link #DECIMAL_DIGIT_NUMBER}</td> </tr>
* <tr> <td> Nl </td> <td> Letter number </td> <td>{@link #LETTER_NUMBER}</td> </tr>
* <tr> <td> No </td> <td> Other number </td> <td>{@link #OTHER_NUMBER}</td> </tr>
* <tr> <td><br></td> </tr>
* <tr> <td> Pd </td> <td> Dash punctuation </td> <td>{@link #DASH_PUNCTUATION}</td> </tr>
* <tr> <td> Ps </td> <td> Start punctuation </td> <td>{@link #START_PUNCTUATION}</td> </tr>
* <tr> <td> Pe </td> <td> End punctuation </td> <td>{@link #END_PUNCTUATION}</td> </tr>
* <tr> <td> Pc </td> <td> Connector punctuation </td> <td>{@link #CONNECTOR_PUNCTUATION}</td> </tr>
* <tr> <td> Pi </td> <td> Initial quote punctuation </td> <td>{@link #INITIAL_QUOTE_PUNCTUATION}</td> </tr>
* <tr> <td> Pf </td> <td> Final quote punctuation </td> <td>{@link #FINAL_QUOTE_PUNCTUATION}</td> </tr>
* <tr> <td> Po </td> <td> Other punctuation </td> <td>{@link #OTHER_PUNCTUATION}</td> </tr>
* <tr> <td><br></td> </tr>
* <tr> <td> Sm </td> <td> Math symbol </td> <td>{@link #MATH_SYMBOL}</td> </tr>
* <tr> <td> Sc </td> <td> Currency symbol </td> <td>{@link #CURRENCY_SYMBOL}</td> </tr>
* <tr> <td> Sk </td> <td> Modifier symbol </td> <td>{@link #MODIFIER_SYMBOL}</td> </tr>
* <tr> <td> So </td> <td> Other symbol </td> <td>{@link #OTHER_SYMBOL}</td> </tr>
* <tr> <td><br></td> </tr>
* <tr> <td> Zs </td> <td> Space separator </td> <td>{@link #SPACE_SEPARATOR}</td> </tr>
* <tr> <td> Zl </td> <td> Line separator </td> <td>{@link #LINE_SEPARATOR}</td> </tr>
* <tr> <td> Zp </td> <td> Paragraph separator </td> <td>{@link #PARAGRAPH_SEPARATOR}</td> </tr>
* </table>
* </span>
*
* @since 1.0
*/
@FindBugsSuppressWarnings("DM_NUMBER_CTOR")
public final class Character implements Serializable, Comparable<Character> {
private static final long serialVersionUID = 3786198910865385080L;
private final char value;
/**
* The minimum {@code Character} value.
*/
public static final char MIN_VALUE = '\u0000';
/**
* The maximum {@code Character} value.
*/
public static final char MAX_VALUE = '\uffff';
/**
* The minimum radix used for conversions between characters and integers.
*/
public static final int MIN_RADIX = 2;
/**
* The maximum radix used for conversions between characters and integers.
*/
public static final int MAX_RADIX = 36;
/**
* The {@link Class} object that represents the primitive type {@code char}.
*/
@SuppressWarnings("unchecked")
public static final Class<Character> TYPE
= (Class<Character>) char[].class.getComponentType();
// Note: Character.TYPE can't be set to "char.class", since *that* is
// defined to be "java.lang.Character.TYPE";
/**
* Unicode category constant Cn.
*/
public static final byte UNASSIGNED = 0;
/**
* Unicode category constant Lu.
*/
public static final byte UPPERCASE_LETTER = 1;
/**
* Unicode category constant Ll.
*/
public static final byte LOWERCASE_LETTER = 2;
/**
* Unicode category constant Lt.
*/
public static final byte TITLECASE_LETTER = 3;
/**
* Unicode category constant Lm.
*/
public static final byte MODIFIER_LETTER = 4;
/**
* Unicode category constant Lo.
*/
public static final byte OTHER_LETTER = 5;
/**
* Unicode category constant Mn.
*/
public static final byte NON_SPACING_MARK = 6;
/**
* Unicode category constant Me.
*/
public static final byte ENCLOSING_MARK = 7;
/**
* Unicode category constant Mc.
*/
public static final byte COMBINING_SPACING_MARK = 8;
/**
* Unicode category constant Nd.
*/
public static final byte DECIMAL_DIGIT_NUMBER = 9;
/**
* Unicode category constant Nl.
*/
public static final byte LETTER_NUMBER = 10;
/**
* Unicode category constant No.
*/
public static final byte OTHER_NUMBER = 11;
/**
* Unicode category constant Zs.
*/
public static final byte SPACE_SEPARATOR = 12;
/**
* Unicode category constant Zl.
*/
public static final byte LINE_SEPARATOR = 13;
/**
* Unicode category constant Zp.
*/
public static final byte PARAGRAPH_SEPARATOR = 14;
/**
* Unicode category constant Cc.
*/
public static final byte CONTROL = 15;
/**
* Unicode category constant Cf.
*/
public static final byte FORMAT = 16;
/**
* Unicode category constant Co.
*/
public static final byte PRIVATE_USE = 18;
/**
* Unicode category constant Cs.
*/
public static final byte SURROGATE = 19;
/**
* Unicode category constant Pd.
*/
public static final byte DASH_PUNCTUATION = 20;
/**
* Unicode category constant Ps.
*/
public static final byte START_PUNCTUATION = 21;
/**
* Unicode category constant Pe.
*/
public static final byte END_PUNCTUATION = 22;
/**
* Unicode category constant Pc.
*/
public static final byte CONNECTOR_PUNCTUATION = 23;
/**
* Unicode category constant Po.
*/
public static final byte OTHER_PUNCTUATION = 24;
/**
* Unicode category constant Sm.
*/
public static final byte MATH_SYMBOL = 25;
/**
* Unicode category constant Sc.
*/
public static final byte CURRENCY_SYMBOL = 26;
/**
* Unicode category constant Sk.
*/
public static final byte MODIFIER_SYMBOL = 27;
/**
* Unicode category constant So.
*/
public static final byte OTHER_SYMBOL = 28;
/**
* Unicode category constant Pi.
*
* @since 1.4
*/
public static final byte INITIAL_QUOTE_PUNCTUATION = 29;
/**
* Unicode category constant Pf.
*
* @since 1.4
*/
public static final byte FINAL_QUOTE_PUNCTUATION = 30;
/**
* Unicode bidirectional constant.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_UNDEFINED = -1;
/**
* Unicode bidirectional constant L.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_LEFT_TO_RIGHT = 0;
/**
* Unicode bidirectional constant R.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_RIGHT_TO_LEFT = 1;
/**
* Unicode bidirectional constant AL.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC = 2;
/**
* Unicode bidirectional constant EN.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_EUROPEAN_NUMBER = 3;
/**
* Unicode bidirectional constant ES.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR = 4;
/**
* Unicode bidirectional constant ET.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR = 5;
/**
* Unicode bidirectional constant AN.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_ARABIC_NUMBER = 6;
/**
* Unicode bidirectional constant CS.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_COMMON_NUMBER_SEPARATOR = 7;
/**
* Unicode bidirectional constant NSM.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_NONSPACING_MARK = 8;
/**
* Unicode bidirectional constant BN.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_BOUNDARY_NEUTRAL = 9;
/**
* Unicode bidirectional constant B.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_PARAGRAPH_SEPARATOR = 10;
/**
* Unicode bidirectional constant S.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_SEGMENT_SEPARATOR = 11;
/**
* Unicode bidirectional constant WS.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_WHITESPACE = 12;
/**
* Unicode bidirectional constant ON.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_OTHER_NEUTRALS = 13;
/**
* Unicode bidirectional constant LRE.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING = 14;
/**
* Unicode bidirectional constant LRO.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE = 15;
/**
* Unicode bidirectional constant RLE.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING = 16;
/**
* Unicode bidirectional constant RLO.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE = 17;
/**
* Unicode bidirectional constant PDF.
*
* @since 1.4
*/
public static final byte DIRECTIONALITY_POP_DIRECTIONAL_FORMAT = 18;
/**
* The minimum value of a high surrogate or leading surrogate unit in UTF-16
* encoding, {@code '\uD800'}.
*
* @since 1.5
*/
public static final char MIN_HIGH_SURROGATE = '\uD800';
/**
* The maximum value of a high surrogate or leading surrogate unit in UTF-16
* encoding, {@code '\uDBFF'}.
*
* @since 1.5
*/
public static final char MAX_HIGH_SURROGATE = '\uDBFF';
/**
* The minimum value of a low surrogate or trailing surrogate unit in UTF-16
* encoding, {@code '\uDC00'}.
*
* @since 1.5
*/
public static final char MIN_LOW_SURROGATE = '\uDC00';
/**
* The maximum value of a low surrogate or trailing surrogate unit in UTF-16
* encoding, {@code '\uDFFF'}.
*
* @since 1.5
*/
public static final char MAX_LOW_SURROGATE = '\uDFFF';
/**
* The minimum value of a surrogate unit in UTF-16 encoding, {@code '\uD800'}.
*
* @since 1.5
*/
public static final char MIN_SURROGATE = '\uD800';
/**
* The maximum value of a surrogate unit in UTF-16 encoding, {@code '\uDFFF'}.
*
* @since 1.5
*/
public static final char MAX_SURROGATE = '\uDFFF';
/**
* The minimum value of a supplementary code point, {@code U+010000}.
*
* @since 1.5
*/
public static final int MIN_SUPPLEMENTARY_CODE_POINT = 0x10000;
/**
* The minimum code point value, {@code U+0000}.
*
* @since 1.5
*/
public static final int MIN_CODE_POINT = 0x000000;
/**
* The maximum code point value, {@code U+10FFFF}.
*
* @since 1.5
*/
public static final int MAX_CODE_POINT = 0x10FFFF;
/**
* The number of bits required to represent a {@code Character} value
* unsigned form.
*
* @since 1.5
*/
public static final int SIZE = 16;
private static final byte[] DIRECTIONALITY = new byte[] {
DIRECTIONALITY_LEFT_TO_RIGHT, DIRECTIONALITY_RIGHT_TO_LEFT,
DIRECTIONALITY_EUROPEAN_NUMBER,
DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR,
DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR,
DIRECTIONALITY_ARABIC_NUMBER,
DIRECTIONALITY_COMMON_NUMBER_SEPARATOR,
DIRECTIONALITY_PARAGRAPH_SEPARATOR,
DIRECTIONALITY_SEGMENT_SEPARATOR, DIRECTIONALITY_WHITESPACE,
DIRECTIONALITY_OTHER_NEUTRALS,
DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING,
DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE,
DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC,
DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING,
DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE,
DIRECTIONALITY_POP_DIRECTIONAL_FORMAT,
DIRECTIONALITY_NONSPACING_MARK, DIRECTIONALITY_BOUNDARY_NEUTRAL };
/*
* Represents a subset of the Unicode character set.
*/
public static class Subset {
String name;
/**
* Constructs a new {@code Subset}.
*
* @param string
* this subset's name.
*/
protected Subset(String string) {
if (string == null) {
throw new NullPointerException();
}
name = string;
}
/**
* Compares this character subset with the specified object. Uses
* {@link java.lang.Object#equals(Object)} to do the comparison.
*
* @param object
* the object to compare this character subset with.
* @return {@code true} if {@code object} is this subset, that is, if
* {@code object == this}; {@code false} otherwise.
*/
@Override
public final boolean equals(Object object) {
return super.equals(object);
}
/**
* Returns the integer hash code for this character subset.
*
* @return this subset's hash code, which is the hash code computed by
* {@link java.lang.Object#hashCode()}.
*/
@Override
public final int hashCode() {
return super.hashCode();
}
/**
* Returns the string representation of this subset.
*
* @return this subset's name.
*/
@Override
public final String toString() {
return name;
}
}
/**
* Represents a block of Unicode characters, as defined by the Unicode 4.0.1
* specification.
*
* @since 1.2
*/
public static final class UnicodeBlock extends Subset {
/**
* The "Surrogates Area" Unicode Block.
*
* @deprecated As of Java 5, this block has been replaced by
* {@link #HIGH_SURROGATES},
* {@link #HIGH_PRIVATE_USE_SURROGATES} and
* {@link #LOW_SURROGATES}.
*/
@Deprecated
public static final UnicodeBlock SURROGATES_AREA = new UnicodeBlock("SURROGATES_AREA", 0x0, 0x0);
/**
* The "Basic Latin" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock BASIC_LATIN = new UnicodeBlock("BASIC_LATIN", 0x0, 0x7f);
/**
* The "Latin-1 Supplement" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock LATIN_1_SUPPLEMENT = new UnicodeBlock("LATIN_1_SUPPLEMENT", 0x80, 0xff);
/**
* The "Latin Extended-A" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock LATIN_EXTENDED_A = new UnicodeBlock("LATIN_EXTENDED_A", 0x100, 0x17f);
/**
* The "Latin Extended-B" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock LATIN_EXTENDED_B = new UnicodeBlock("LATIN_EXTENDED_B", 0x180, 0x24f);
/**
* The "IPA Extensions" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock IPA_EXTENSIONS = new UnicodeBlock("IPA_EXTENSIONS", 0x250, 0x2af);
/**
* The "Spacing Modifier Letters" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock SPACING_MODIFIER_LETTERS = new UnicodeBlock("SPACING_MODIFIER_LETTERS", 0x2b0, 0x2ff);
/**
* The "Combining Diacritical Marks" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock COMBINING_DIACRITICAL_MARKS = new UnicodeBlock("COMBINING_DIACRITICAL_MARKS", 0x300, 0x36f);
/**
* The "Greek and Coptic" Unicode Block. Previously referred
* to as "Greek".
*
* @since 1.2
*/
public static final UnicodeBlock GREEK = new UnicodeBlock("GREEK", 0x370, 0x3ff);
/**
* The "Cyrillic" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CYRILLIC = new UnicodeBlock("CYRILLIC", 0x400, 0x4ff);
/**
* The "Cyrillic Supplement" Unicode Block. Previously
* referred to as "Cyrillic Supplementary".
*
* @since 1.5
*/
public static final UnicodeBlock CYRILLIC_SUPPLEMENTARY = new UnicodeBlock("CYRILLIC_SUPPLEMENTARY", 0x500, 0x52f);
/**
* The "Armenian" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ARMENIAN = new UnicodeBlock("ARMENIAN", 0x530, 0x58f);
/**
* The "Hebrew" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock HEBREW = new UnicodeBlock("HEBREW", 0x590, 0x5ff);
/**
* The "Arabic" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ARABIC = new UnicodeBlock("ARABIC", 0x600, 0x6ff);
/**
* The "Syriac" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock SYRIAC = new UnicodeBlock("SYRIAC", 0x700, 0x74f);
/**
* The "Thaana" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock THAANA = new UnicodeBlock("THAANA", 0x780, 0x7bf);
/**
* The "Devanagari" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock DEVANAGARI = new UnicodeBlock("DEVANAGARI", 0x900, 0x97f);
/**
* The "Bengali" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock BENGALI = new UnicodeBlock("BENGALI", 0x980, 0x9ff);
/**
* The "Gurmukhi" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock GURMUKHI = new UnicodeBlock("GURMUKHI", 0xa00, 0xa7f);
/**
* The "Gujarati" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock GUJARATI = new UnicodeBlock("GUJARATI", 0xa80, 0xaff);
/**
* The "Oriya" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ORIYA = new UnicodeBlock("ORIYA", 0xb00, 0xb7f);
/**
* The "Tamil" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock TAMIL = new UnicodeBlock("TAMIL", 0xb80, 0xbff);
/**
* The "Telugu" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock TELUGU = new UnicodeBlock("TELUGU", 0xc00, 0xc7f);
/**
* The "Kannada" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock KANNADA = new UnicodeBlock("KANNADA", 0xc80, 0xcff);
/**
* The "Malayalam" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock MALAYALAM = new UnicodeBlock("MALAYALAM", 0xd00, 0xd7f);
/**
* The "Sinhala" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock SINHALA = new UnicodeBlock("SINHALA", 0xd80, 0xdff);
/**
* The "Thai" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock THAI = new UnicodeBlock("THAI", 0xe00, 0xe7f);
/**
* The "Lao" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock LAO = new UnicodeBlock("LAO", 0xe80, 0xeff);
/**
* The "Tibetan" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock TIBETAN = new UnicodeBlock("TIBETAN", 0xf00, 0xfff);
/**
* The "Myanmar" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock MYANMAR = new UnicodeBlock("MYANMAR", 0x1000, 0x109f);
/**
* The "Georgian" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock GEORGIAN = new UnicodeBlock("GEORGIAN", 0x10a0, 0x10ff);
/**
* The "Hangul Jamo" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock HANGUL_JAMO = new UnicodeBlock("HANGUL_JAMO", 0x1100, 0x11ff);
/**
* The "Ethiopic" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock ETHIOPIC = new UnicodeBlock("ETHIOPIC", 0x1200, 0x137f);
/**
* The "Cherokee" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock CHEROKEE = new UnicodeBlock("CHEROKEE", 0x13a0, 0x13ff);
/**
* The "Unified Canadian Aboriginal Syllabics" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS = new UnicodeBlock("UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS", 0x1400, 0x167f);
/**
* The "Ogham" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock OGHAM = new UnicodeBlock("OGHAM", 0x1680, 0x169f);
/**
* The "Runic" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock RUNIC = new UnicodeBlock("RUNIC", 0x16a0, 0x16ff);
/**
* The "Tagalog" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock TAGALOG = new UnicodeBlock("TAGALOG", 0x1700, 0x171f);
/**
* The "Hanunoo" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock HANUNOO = new UnicodeBlock("HANUNOO", 0x1720, 0x173f);
/**
* The "Buhid" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock BUHID = new UnicodeBlock("BUHID", 0x1740, 0x175f);
/**
* The "Tagbanwa" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock TAGBANWA = new UnicodeBlock("TAGBANWA", 0x1760, 0x177f);
/**
* The "Khmer" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock KHMER = new UnicodeBlock("KHMER", 0x1780, 0x17ff);
/**
* The "Mongolian" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock MONGOLIAN = new UnicodeBlock("MONGOLIAN", 0x1800, 0x18af);
/**
* The "Limbu" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock LIMBU = new UnicodeBlock("LIMBU", 0x1900, 0x194f);
/**
* The "Tai Le" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock TAI_LE = new UnicodeBlock("TAI_LE", 0x1950, 0x197f);
/**
* The "Khmer Symbols" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock KHMER_SYMBOLS = new UnicodeBlock("KHMER_SYMBOLS", 0x19e0, 0x19ff);
/**
* The "Phonetic Extensions" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock PHONETIC_EXTENSIONS = new UnicodeBlock("PHONETIC_EXTENSIONS", 0x1d00, 0x1d7f);
/**
* The "Latin Extended Additional" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock LATIN_EXTENDED_ADDITIONAL = new UnicodeBlock("LATIN_EXTENDED_ADDITIONAL", 0x1e00, 0x1eff);
/**
* The "Greek Extended" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock GREEK_EXTENDED = new UnicodeBlock("GREEK_EXTENDED", 0x1f00, 0x1fff);
/**
* The "General Punctuation" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock GENERAL_PUNCTUATION = new UnicodeBlock("GENERAL_PUNCTUATION", 0x2000, 0x206f);
/**
* The "Superscripts and Subscripts" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock SUPERSCRIPTS_AND_SUBSCRIPTS = new UnicodeBlock("SUPERSCRIPTS_AND_SUBSCRIPTS", 0x2070, 0x209f);
/**
* The "Currency Symbols" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CURRENCY_SYMBOLS = new UnicodeBlock("CURRENCY_SYMBOLS", 0x20a0, 0x20cf);
/**
* The "Combining Diacritical Marks for Symbols" Unicode
* Block. Previously referred to as "Combining Marks for
* Symbols".
*
* @since 1.2
*/
public static final UnicodeBlock COMBINING_MARKS_FOR_SYMBOLS = new UnicodeBlock("COMBINING_MARKS_FOR_SYMBOLS", 0x20d0, 0x20ff);
/**
* The "Letterlike Symbols" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock LETTERLIKE_SYMBOLS = new UnicodeBlock("LETTERLIKE_SYMBOLS", 0x2100, 0x214f);
/**
* The "Number Forms" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock NUMBER_FORMS = new UnicodeBlock("NUMBER_FORMS", 0x2150, 0x218f);
/**
* The "Arrows" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ARROWS = new UnicodeBlock("ARROWS", 0x2190, 0x21ff);
/**
* The "Mathematical Operators" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock MATHEMATICAL_OPERATORS = new UnicodeBlock("MATHEMATICAL_OPERATORS", 0x2200, 0x22ff);
/**
* The "Miscellaneous Technical" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock MISCELLANEOUS_TECHNICAL = new UnicodeBlock("MISCELLANEOUS_TECHNICAL", 0x2300, 0x23ff);
/**
* The "Control Pictures" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CONTROL_PICTURES = new UnicodeBlock("CONTROL_PICTURES", 0x2400, 0x243f);
/**
* The "Optical Character Recognition" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock OPTICAL_CHARACTER_RECOGNITION = new UnicodeBlock("OPTICAL_CHARACTER_RECOGNITION", 0x2440, 0x245f);
/**
* The "Enclosed Alphanumerics" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ENCLOSED_ALPHANUMERICS = new UnicodeBlock("ENCLOSED_ALPHANUMERICS", 0x2460, 0x24ff);
/**
* The "Box Drawing" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock BOX_DRAWING = new UnicodeBlock("BOX_DRAWING", 0x2500, 0x257f);
/**
* The "Block Elements" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock BLOCK_ELEMENTS = new UnicodeBlock("BLOCK_ELEMENTS", 0x2580, 0x259f);
/**
* The "Geometric Shapes" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock GEOMETRIC_SHAPES = new UnicodeBlock("GEOMETRIC_SHAPES", 0x25a0, 0x25ff);
/**
* The "Miscellaneous Symbols" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock MISCELLANEOUS_SYMBOLS = new UnicodeBlock("MISCELLANEOUS_SYMBOLS", 0x2600, 0x26ff);
/**
* The "Dingbats" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock DINGBATS = new UnicodeBlock("DINGBATS", 0x2700, 0x27bf);
/**
* The "Miscellaneous Mathematical Symbols-A" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A = new UnicodeBlock("MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A", 0x27c0, 0x27ef);
/**
* The "Supplemental Arrows-A" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock SUPPLEMENTAL_ARROWS_A = new UnicodeBlock("SUPPLEMENTAL_ARROWS_A", 0x27f0, 0x27ff);
/**
* The "Braille Patterns" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock BRAILLE_PATTERNS = new UnicodeBlock("BRAILLE_PATTERNS", 0x2800, 0x28ff);
/**
* The "Supplemental Arrows-B" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock SUPPLEMENTAL_ARROWS_B = new UnicodeBlock("SUPPLEMENTAL_ARROWS_B", 0x2900, 0x297f);
/**
* The "Miscellaneous Mathematical Symbols-B" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B = new UnicodeBlock("MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B", 0x2980, 0x29ff);
/**
* The "Supplemental Mathematical Operators" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock SUPPLEMENTAL_MATHEMATICAL_OPERATORS = new UnicodeBlock("SUPPLEMENTAL_MATHEMATICAL_OPERATORS", 0x2a00, 0x2aff);
/**
* The "Miscellaneous Symbols and Arrows" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock MISCELLANEOUS_SYMBOLS_AND_ARROWS = new UnicodeBlock("MISCELLANEOUS_SYMBOLS_AND_ARROWS", 0x2b00, 0x2bff);
/**
* The "CJK Radicals Supplement" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock CJK_RADICALS_SUPPLEMENT = new UnicodeBlock("CJK_RADICALS_SUPPLEMENT", 0x2e80, 0x2eff);
/**
* The "Kangxi Radicals" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock KANGXI_RADICALS = new UnicodeBlock("KANGXI_RADICALS", 0x2f00, 0x2fdf);
/**
* The "Ideographic Description Characters" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock IDEOGRAPHIC_DESCRIPTION_CHARACTERS = new UnicodeBlock("IDEOGRAPHIC_DESCRIPTION_CHARACTERS", 0x2ff0, 0x2fff);
/**
* The "CJK Symbols and Punctuation" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CJK_SYMBOLS_AND_PUNCTUATION = new UnicodeBlock("CJK_SYMBOLS_AND_PUNCTUATION", 0x3000, 0x303f);
/**
* The "Hiragana" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock HIRAGANA = new UnicodeBlock("HIRAGANA", 0x3040, 0x309f);
/**
* The "Katakana" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock KATAKANA = new UnicodeBlock("KATAKANA", 0x30a0, 0x30ff);
/**
* The "Bopomofo" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock BOPOMOFO = new UnicodeBlock("BOPOMOFO", 0x3100, 0x312f);
/**
* The "Hangul Compatibility Jamo" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock HANGUL_COMPATIBILITY_JAMO = new UnicodeBlock("HANGUL_COMPATIBILITY_JAMO", 0x3130, 0x318f);
/**
* The "Kanbun" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock KANBUN = new UnicodeBlock("KANBUN", 0x3190, 0x319f);
/**
* The "Bopomofo Extended" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock BOPOMOFO_EXTENDED = new UnicodeBlock("BOPOMOFO_EXTENDED", 0x31a0, 0x31bf);
/**
* The "Katakana Phonetic Extensions" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock KATAKANA_PHONETIC_EXTENSIONS = new UnicodeBlock("KATAKANA_PHONETIC_EXTENSIONS", 0x31f0, 0x31ff);
/**
* The "Enclosed CJK Letters and Months" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ENCLOSED_CJK_LETTERS_AND_MONTHS = new UnicodeBlock("ENCLOSED_CJK_LETTERS_AND_MONTHS", 0x3200, 0x32ff);
/**
* The "CJK Compatibility" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CJK_COMPATIBILITY = new UnicodeBlock("CJK_COMPATIBILITY", 0x3300, 0x33ff);
/**
* The "CJK Unified Ideographs Extension A" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A = new UnicodeBlock("CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A", 0x3400, 0x4dbf);
/**
* The "Yijing Hexagram Symbols" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock YIJING_HEXAGRAM_SYMBOLS = new UnicodeBlock("YIJING_HEXAGRAM_SYMBOLS", 0x4dc0, 0x4dff);
/**
* The "CJK Unified Ideographs" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CJK_UNIFIED_IDEOGRAPHS = new UnicodeBlock("CJK_UNIFIED_IDEOGRAPHS", 0x4e00, 0x9fff);
/**
* The "Yi Syllables" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock YI_SYLLABLES = new UnicodeBlock("YI_SYLLABLES", 0xa000, 0xa48f);
/**
* The "Yi Radicals" Unicode Block.
*
* @since 1.4
*/
public static final UnicodeBlock YI_RADICALS = new UnicodeBlock("YI_RADICALS", 0xa490, 0xa4cf);
/**
* The "Hangul Syllables" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock HANGUL_SYLLABLES = new UnicodeBlock("HANGUL_SYLLABLES", 0xac00, 0xd7af);
/**
* The "High Surrogates" Unicode Block. This block represents
* code point values in the high surrogate range 0xD800 to 0xDB7F
*/
public static final UnicodeBlock HIGH_SURROGATES = new UnicodeBlock("HIGH_SURROGATES", 0xd800, 0xdb7f);
/**
* The "High Private Use Surrogates" Unicode Block. This block
* represents code point values in the high surrogate range 0xDB80 to
* 0xDBFF
*/
public static final UnicodeBlock HIGH_PRIVATE_USE_SURROGATES = new UnicodeBlock("HIGH_PRIVATE_USE_SURROGATES", 0xdb80, 0xdbff);
/**
* The "Low Surrogates" Unicode Block. This block represents
* code point values in the low surrogate range 0xDC00 to 0xDFFF
*/
public static final UnicodeBlock LOW_SURROGATES = new UnicodeBlock("LOW_SURROGATES", 0xdc00, 0xdfff);
/**
* The "Private Use Area" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock PRIVATE_USE_AREA = new UnicodeBlock("PRIVATE_USE_AREA", 0xe000, 0xf8ff);
/**
* The "CJK Compatibility Ideographs" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CJK_COMPATIBILITY_IDEOGRAPHS = new UnicodeBlock("CJK_COMPATIBILITY_IDEOGRAPHS", 0xf900, 0xfaff);
/**
* The "Alphabetic Presentation Forms" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ALPHABETIC_PRESENTATION_FORMS = new UnicodeBlock("ALPHABETIC_PRESENTATION_FORMS", 0xfb00, 0xfb4f);
/**
* The "Arabic Presentation Forms-A" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ARABIC_PRESENTATION_FORMS_A = new UnicodeBlock("ARABIC_PRESENTATION_FORMS_A", 0xfb50, 0xfdff);
/**
* The "Variation Selectors" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock VARIATION_SELECTORS = new UnicodeBlock("VARIATION_SELECTORS", 0xfe00, 0xfe0f);
/**
* The "Combining Half Marks" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock COMBINING_HALF_MARKS = new UnicodeBlock("COMBINING_HALF_MARKS", 0xfe20, 0xfe2f);
/**
* The "CJK Compatibility Forms" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock CJK_COMPATIBILITY_FORMS = new UnicodeBlock("CJK_COMPATIBILITY_FORMS", 0xfe30, 0xfe4f);
/**
* The "Small Form Variants" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock SMALL_FORM_VARIANTS = new UnicodeBlock("SMALL_FORM_VARIANTS", 0xfe50, 0xfe6f);
/**
* The "Arabic Presentation Forms-B" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock ARABIC_PRESENTATION_FORMS_B = new UnicodeBlock("ARABIC_PRESENTATION_FORMS_B", 0xfe70, 0xfeff);
/**
* The "Halfwidth and Fullwidth Forms" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock HALFWIDTH_AND_FULLWIDTH_FORMS = new UnicodeBlock("HALFWIDTH_AND_FULLWIDTH_FORMS", 0xff00, 0xffef);
/**
* The "Specials" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock SPECIALS = new UnicodeBlock("SPECIALS", 0xfff0, 0xffff);
/**
* The "Linear B Syllabary" Unicode Block.
*
* @since 1.2
*/
public static final UnicodeBlock LINEAR_B_SYLLABARY = new UnicodeBlock("LINEAR_B_SYLLABARY", 0x10000, 0x1007f);
/**
* The "Linear B Ideograms" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock LINEAR_B_IDEOGRAMS = new UnicodeBlock("LINEAR_B_IDEOGRAMS", 0x10080, 0x100ff);
/**
* The "Aegean Numbers" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock AEGEAN_NUMBERS = new UnicodeBlock("AEGEAN_NUMBERS", 0x10100, 0x1013f);
/**
* The "Old Italic" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock OLD_ITALIC = new UnicodeBlock("OLD_ITALIC", 0x10300, 0x1032f);
/**
* The "Gothic" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock GOTHIC = new UnicodeBlock("GOTHIC", 0x10330, 0x1034f);
/**
* The "Ugaritic" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock UGARITIC = new UnicodeBlock("UGARITIC", 0x10380, 0x1039f);
/**
* The "Deseret" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock DESERET = new UnicodeBlock("DESERET", 0x10400, 0x1044f);
/**
* The "Shavian" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock SHAVIAN = new UnicodeBlock("SHAVIAN", 0x10450, 0x1047f);
/**
* The "Osmanya" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock OSMANYA = new UnicodeBlock("OSMANYA", 0x10480, 0x104af);
/**
* The "Cypriot Syllabary" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock CYPRIOT_SYLLABARY = new UnicodeBlock("CYPRIOT_SYLLABARY", 0x10800, 0x1083f);
/**
* The "Byzantine Musical Symbols" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock BYZANTINE_MUSICAL_SYMBOLS = new UnicodeBlock("BYZANTINE_MUSICAL_SYMBOLS", 0x1d000, 0x1d0ff);
/**
* The "Musical Symbols" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock MUSICAL_SYMBOLS = new UnicodeBlock("MUSICAL_SYMBOLS", 0x1d100, 0x1d1ff);
/**
* The "Tai Xuan Jing Symbols" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock TAI_XUAN_JING_SYMBOLS = new UnicodeBlock("TAI_XUAN_JING_SYMBOLS", 0x1d300, 0x1d35f);
/**
* The "Mathematical Alphanumeric Symbols" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock MATHEMATICAL_ALPHANUMERIC_SYMBOLS = new UnicodeBlock("MATHEMATICAL_ALPHANUMERIC_SYMBOLS", 0x1d400, 0x1d7ff);
/**
* The "CJK Unified Ideographs Extension B" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B = new UnicodeBlock("CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B", 0x20000, 0x2a6df);
/**
* The "CJK Compatibility Ideographs Supplement" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT = new UnicodeBlock("CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT", 0x2f800, 0x2fa1f);
/**
* The "Tags" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock TAGS = new UnicodeBlock("TAGS", 0xe0000, 0xe007f);
/**
* The "Variation Selectors Supplement" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock VARIATION_SELECTORS_SUPPLEMENT = new UnicodeBlock("VARIATION_SELECTORS_SUPPLEMENT", 0xe0100, 0xe01ef);
/**
* The "Supplementary Private Use Area-A" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock SUPPLEMENTARY_PRIVATE_USE_AREA_A = new UnicodeBlock("SUPPLEMENTARY_PRIVATE_USE_AREA_A", 0xf0000, 0xfffff);
/**
* The "Supplementary Private Use Area-B" Unicode Block.
*
* @since 1.5
*/
public static final UnicodeBlock SUPPLEMENTARY_PRIVATE_USE_AREA_B = new UnicodeBlock("SUPPLEMENTARY_PRIVATE_USE_AREA_B", 0x100000, 0x10ffff);
/*
* All of the UnicodeBlocks with valid ranges in ascending order.
*/
private static UnicodeBlock[] BLOCKS = new UnicodeBlock[] {
null,
UnicodeBlock.BASIC_LATIN,
UnicodeBlock.LATIN_1_SUPPLEMENT,
UnicodeBlock.LATIN_EXTENDED_A,
UnicodeBlock.LATIN_EXTENDED_B,
UnicodeBlock.IPA_EXTENSIONS,
UnicodeBlock.SPACING_MODIFIER_LETTERS,
UnicodeBlock.COMBINING_DIACRITICAL_MARKS,
UnicodeBlock.GREEK,
UnicodeBlock.CYRILLIC,
UnicodeBlock.ARMENIAN,
UnicodeBlock.HEBREW,
UnicodeBlock.ARABIC,
UnicodeBlock.SYRIAC,
UnicodeBlock.THAANA,
UnicodeBlock.DEVANAGARI,
UnicodeBlock.BENGALI,
UnicodeBlock.GURMUKHI,
UnicodeBlock.GUJARATI,
UnicodeBlock.ORIYA,
UnicodeBlock.TAMIL,
UnicodeBlock.TELUGU,
UnicodeBlock.KANNADA,
UnicodeBlock.MALAYALAM,
UnicodeBlock.SINHALA,
UnicodeBlock.THAI,
UnicodeBlock.LAO,
UnicodeBlock.TIBETAN,
UnicodeBlock.MYANMAR,
UnicodeBlock.GEORGIAN,
UnicodeBlock.HANGUL_JAMO,
UnicodeBlock.ETHIOPIC,
UnicodeBlock.CHEROKEE,
UnicodeBlock.UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS,
UnicodeBlock.OGHAM,
UnicodeBlock.RUNIC,
UnicodeBlock.KHMER,
UnicodeBlock.MONGOLIAN,
UnicodeBlock.LATIN_EXTENDED_ADDITIONAL,
UnicodeBlock.GREEK_EXTENDED,
UnicodeBlock.GENERAL_PUNCTUATION,
UnicodeBlock.SUPERSCRIPTS_AND_SUBSCRIPTS,
UnicodeBlock.CURRENCY_SYMBOLS,
UnicodeBlock.COMBINING_MARKS_FOR_SYMBOLS,
UnicodeBlock.LETTERLIKE_SYMBOLS,
UnicodeBlock.NUMBER_FORMS,
UnicodeBlock.ARROWS,
UnicodeBlock.MATHEMATICAL_OPERATORS,
UnicodeBlock.MISCELLANEOUS_TECHNICAL,
UnicodeBlock.CONTROL_PICTURES,
UnicodeBlock.OPTICAL_CHARACTER_RECOGNITION,
UnicodeBlock.ENCLOSED_ALPHANUMERICS,
UnicodeBlock.BOX_DRAWING,
UnicodeBlock.BLOCK_ELEMENTS,
UnicodeBlock.GEOMETRIC_SHAPES,
UnicodeBlock.MISCELLANEOUS_SYMBOLS,
UnicodeBlock.DINGBATS,
UnicodeBlock.BRAILLE_PATTERNS,
UnicodeBlock.CJK_RADICALS_SUPPLEMENT,
UnicodeBlock.KANGXI_RADICALS,
UnicodeBlock.IDEOGRAPHIC_DESCRIPTION_CHARACTERS,
UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION,
UnicodeBlock.HIRAGANA,
UnicodeBlock.KATAKANA,
UnicodeBlock.BOPOMOFO,
UnicodeBlock.HANGUL_COMPATIBILITY_JAMO,
UnicodeBlock.KANBUN,
UnicodeBlock.BOPOMOFO_EXTENDED,
UnicodeBlock.ENCLOSED_CJK_LETTERS_AND_MONTHS,
UnicodeBlock.CJK_COMPATIBILITY,
UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A,
UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS,
UnicodeBlock.YI_SYLLABLES,
UnicodeBlock.YI_RADICALS,
UnicodeBlock.HANGUL_SYLLABLES,
UnicodeBlock.HIGH_SURROGATES,
UnicodeBlock.HIGH_PRIVATE_USE_SURROGATES,
UnicodeBlock.LOW_SURROGATES,
UnicodeBlock.PRIVATE_USE_AREA,
UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS,
UnicodeBlock.ALPHABETIC_PRESENTATION_FORMS,
UnicodeBlock.ARABIC_PRESENTATION_FORMS_A,
UnicodeBlock.COMBINING_HALF_MARKS,
UnicodeBlock.CJK_COMPATIBILITY_FORMS,
UnicodeBlock.SMALL_FORM_VARIANTS,
UnicodeBlock.ARABIC_PRESENTATION_FORMS_B,
UnicodeBlock.SPECIALS,
UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS,
UnicodeBlock.OLD_ITALIC,
UnicodeBlock.GOTHIC,
UnicodeBlock.DESERET,
UnicodeBlock.BYZANTINE_MUSICAL_SYMBOLS,
UnicodeBlock.MUSICAL_SYMBOLS,
UnicodeBlock.MATHEMATICAL_ALPHANUMERIC_SYMBOLS,
UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B,
UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT,
UnicodeBlock.TAGS,
UnicodeBlock.CYRILLIC_SUPPLEMENTARY,
UnicodeBlock.TAGALOG,
UnicodeBlock.HANUNOO,
UnicodeBlock.BUHID,
UnicodeBlock.TAGBANWA,
UnicodeBlock.MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A,
UnicodeBlock.SUPPLEMENTAL_ARROWS_A,
UnicodeBlock.SUPPLEMENTAL_ARROWS_B,
UnicodeBlock.MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B,
UnicodeBlock.SUPPLEMENTAL_MATHEMATICAL_OPERATORS,
UnicodeBlock.KATAKANA_PHONETIC_EXTENSIONS,
UnicodeBlock.VARIATION_SELECTORS,
UnicodeBlock.SUPPLEMENTARY_PRIVATE_USE_AREA_A,
UnicodeBlock.SUPPLEMENTARY_PRIVATE_USE_AREA_B,
UnicodeBlock.LIMBU,
UnicodeBlock.TAI_LE,
UnicodeBlock.KHMER_SYMBOLS,
UnicodeBlock.PHONETIC_EXTENSIONS,
UnicodeBlock.MISCELLANEOUS_SYMBOLS_AND_ARROWS,
UnicodeBlock.YIJING_HEXAGRAM_SYMBOLS,
UnicodeBlock.LINEAR_B_SYLLABARY,
UnicodeBlock.LINEAR_B_IDEOGRAMS,
UnicodeBlock.AEGEAN_NUMBERS,
UnicodeBlock.UGARITIC,
UnicodeBlock.SHAVIAN,
UnicodeBlock.OSMANYA,
UnicodeBlock.CYPRIOT_SYLLABARY,
UnicodeBlock.TAI_XUAN_JING_SYMBOLS,
UnicodeBlock.VARIATION_SELECTORS_SUPPLEMENT
};
/**
* Retrieves the constant that corresponds to the specified block name.
* The block names are defined by the Unicode 4.0.1 specification in the
* {@code Blocks-4.0.1.txt} file.
* <p>
* Block names may be one of the following:
* <ul>
* <li>Canonical block name, as defined by the Unicode specification;
* case-insensitive.</li>
* <li>Canonical block name without any spaces, as defined by the
* Unicode specification; case-insensitive.</li>
* <li>{@code UnicodeBlock} constant identifier. This is determined by
* uppercasing the canonical name and replacing all spaces and hyphens
* with underscores.</li>
* </ul>
*
* @param blockName
* the name of the block to retrieve.
* @return the UnicodeBlock constant corresponding to {@code blockName}.
* @throws NullPointerException
* if {@code blockName} is {@code null}.
* @throws IllegalArgumentException
* if {@code blockName} is not a valid block name.
* @since 1.5
*/
public static UnicodeBlock forName(String blockName) {
if (blockName == null) {
throw new NullPointerException();
}
int block = forNameImpl(blockName);
if (block == -1) {
if (blockName.equals("SURROGATES_AREA")) {
return SURROGATES_AREA;
} else if(blockName.equalsIgnoreCase("greek")) {
return GREEK;
} else if(blockName.equals("COMBINING_MARKS_FOR_SYMBOLS") ||
blockName.equals("Combining Marks for Symbols") ||
blockName.equals("CombiningMarksforSymbols")) {
return COMBINING_MARKS_FOR_SYMBOLS;
}
throw new IllegalArgumentException("Bad block name: " + blockName);
}
return BLOCKS[block];
}
/**
* Gets the constant for the Unicode block that contains the specified
* character.
*
* @param c
* the character for which to get the {@code UnicodeBlock}
* constant.
* @return the {@code UnicodeBlock} constant for the block that contains
* {@code c}, or {@code null} if {@code c} does not belong to
* any defined block.
*/
public static UnicodeBlock of(char c) {
return of((int) c);
}
/**
* Gets the constant for the Unicode block that contains the specified
* Unicode code point.
*
* @param codePoint
* the Unicode code point for which to get the
* {@code UnicodeBlock} constant.
* @return the {@code UnicodeBlock} constant for the block that contains
* {@code codePoint}, or {@code null} if {@code codePoint} does
* not belong to any defined block.
* @throws IllegalArgumentException if {@code codePoint} is not a valid code point.
* @since 1.5
*/
public static UnicodeBlock of(int codePoint) {
checkValidCodePoint(codePoint);
int block = ofImpl(codePoint);
if (block == -1 || block >= BLOCKS.length) {
return null;
}
return BLOCKS[block];
}
private UnicodeBlock(String blockName, int start, int end) {
super(blockName);
}
}
private static native int forNameImpl(String blockName);
private static native int ofImpl(int codePoint);
/**
* Constructs a new {@code Character} with the specified primitive char
* value.
*
* @param value
* the primitive char value to store in the new instance.
*/
public Character(char value) {
this.value = value;
}
/**
* Gets the primitive value of this character.
*
* @return this object's primitive value.
*/
public char charValue() {
return value;
}
private static void checkValidCodePoint(int codePoint) {
if (!isValidCodePoint(codePoint)) {
throw new IllegalArgumentException("Invalid code point: " + codePoint);
}
}
/**
* Compares this object to the specified character object to determine their
* relative order.
*
* @param c
* the character object to compare this object to.
* @return {@code 0} if the value of this character and the value of
* {@code c} are equal; a positive value if the value of this
* character is greater than the value of {@code c}; a negative
* value if the value of this character is less than the value of
* {@code c}.
* @see java.lang.Comparable
* @since 1.2
*/
public int compareTo(Character c) {
return compare(value, c.value);
}
/**
* Compares two {@code char} values.
* @return 0 if lhs = rhs, less than 0 if lhs < rhs, and greater than 0 if lhs > rhs.
* @since 1.7
* @hide 1.7
*/
public static int compare(char lhs, char rhs) {
return lhs - rhs;
}
/**
* Returns a {@code Character} instance for the {@code char} value passed.
* <p>
* If it is not necessary to get a new {@code Character} instance, it is
* recommended to use this method instead of the constructor, since it
* maintains a cache of instances which may result in better performance.
*
* @param c
* the char value for which to get a {@code Character} instance.
* @return the {@code Character} instance for {@code c}.
* @since 1.5
*/
public static Character valueOf(char c) {
return c < 128 ? SMALL_VALUES[c] : new Character(c);
}
/**
* A cache of instances used by {@link #valueOf(char)} and auto-boxing
*/
private static final Character[] SMALL_VALUES = new Character[128];
static {
for (int i = 0; i < 128; i++) {
SMALL_VALUES[i] = new Character((char) i);
}
}
/**
* Indicates whether {@code codePoint} is a valid Unicode code point.
*
* @param codePoint
* the code point to test.
* @return {@code true} if {@code codePoint} is a valid Unicode code point;
* {@code false} otherwise.
* @since 1.5
*/
public static boolean isValidCodePoint(int codePoint) {
return (MIN_CODE_POINT <= codePoint && MAX_CODE_POINT >= codePoint);
}
/**
* Indicates whether {@code codePoint} is within the supplementary code
* point range.
*
* @param codePoint
* the code point to test.
* @return {@code true} if {@code codePoint} is within the supplementary
* code point range; {@code false} otherwise.
* @since 1.5
*/
public static boolean isSupplementaryCodePoint(int codePoint) {
return (MIN_SUPPLEMENTARY_CODE_POINT <= codePoint && MAX_CODE_POINT >= codePoint);
}
/**
* Indicates whether {@code ch} is a high- (or leading-) surrogate code unit
* that is used for representing supplementary characters in UTF-16
* encoding.
*
* @param ch
* the character to test.
* @return {@code true} if {@code ch} is a high-surrogate code unit;
* {@code false} otherwise.
* @see #isLowSurrogate(char)
* @since 1.5
*/
public static boolean isHighSurrogate(char ch) {
return (MIN_HIGH_SURROGATE <= ch && MAX_HIGH_SURROGATE >= ch);
}
/**
* Indicates whether {@code ch} is a low- (or trailing-) surrogate code unit
* that is used for representing supplementary characters in UTF-16
* encoding.
*
* @param ch
* the character to test.
* @return {@code true} if {@code ch} is a low-surrogate code unit;
* {@code false} otherwise.
* @see #isHighSurrogate(char)
* @since 1.5
*/
public static boolean isLowSurrogate(char ch) {
return (MIN_LOW_SURROGATE <= ch && MAX_LOW_SURROGATE >= ch);
}
/**
* Tests whether the given character is a high or low surrogate.
* @since 1.7
* @hide 1.7
*/
public static boolean isSurrogate(char ch) {
return ch >= MIN_SURROGATE && ch <= MAX_SURROGATE;
}
/**
* Indicates whether the specified character pair is a valid surrogate pair.
*
* @param high
* the high surrogate unit to test.
* @param low
* the low surrogate unit to test.
* @return {@code true} if {@code high} is a high-surrogate code unit and
* {@code low} is a low-surrogate code unit; {@code false}
* otherwise.
* @see #isHighSurrogate(char)
* @see #isLowSurrogate(char)
* @since 1.5
*/
public static boolean isSurrogatePair(char high, char low) {
return (isHighSurrogate(high) && isLowSurrogate(low));
}
/**
* Calculates the number of {@code char} values required to represent the
* specified Unicode code point. This method checks if the {@code codePoint}
* is greater than or equal to {@code 0x10000}, in which case {@code 2} is
* returned, otherwise {@code 1}. To test if the code point is valid, use
* the {@link #isValidCodePoint(int)} method.
*
* @param codePoint
* the code point for which to calculate the number of required
* chars.
* @return {@code 2} if {@code codePoint >= 0x10000}; {@code 1} otherwise.
* @see #isValidCodePoint(int)
* @see #isSupplementaryCodePoint(int)
* @since 1.5
*/
public static int charCount(int codePoint) {
return (codePoint >= 0x10000 ? 2 : 1);
}
/**
* Converts a surrogate pair into a Unicode code point. This method assumes
* that the pair are valid surrogates. If the pair are <i>not</i> valid
* surrogates, then the result is indeterminate. The
* {@link #isSurrogatePair(char, char)} method should be used prior to this
* method to validate the pair.
*
* @param high
* the high surrogate unit.
* @param low
* the low surrogate unit.
* @return the Unicode code point corresponding to the surrogate unit pair.
* @see #isSurrogatePair(char, char)
* @since 1.5
*/
public static int toCodePoint(char high, char low) {
// See RFC 2781, Section 2.2
// http://www.ietf.org/rfc/rfc2781.txt
int h = (high & 0x3FF) << 10;
int l = low & 0x3FF;
return (h | l) + 0x10000;
}
/**
* Returns the code point at {@code index} in the specified sequence of
* character units. If the unit at {@code index} is a high-surrogate unit,
* {@code index + 1} is less than the length of the sequence and the unit at
* {@code index + 1} is a low-surrogate unit, then the supplementary code
* point represented by the pair is returned; otherwise the {@code char}
* value at {@code index} is returned.
*
* @param seq
* the source sequence of {@code char} units.
* @param index
* the position in {@code seq} from which to retrieve the code
* point.
* @return the Unicode code point or {@code char} value at {@code index} in
* {@code seq}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if the {@code index} is negative or greater than or equal to
* the length of {@code seq}.
* @since 1.5
*/
public static int codePointAt(CharSequence seq, int index) {
if (seq == null) {
throw new NullPointerException();
}
int len = seq.length();
if (index < 0 || index >= len) {
throw new IndexOutOfBoundsException();
}
char high = seq.charAt(index++);
if (index >= len) {
return high;
}
char low = seq.charAt(index);
if (isSurrogatePair(high, low)) {
return toCodePoint(high, low);
}
return high;
}
/**
* Returns the code point at {@code index} in the specified array of
* character units. If the unit at {@code index} is a high-surrogate unit,
* {@code index + 1} is less than the length of the array and the unit at
* {@code index + 1} is a low-surrogate unit, then the supplementary code
* point represented by the pair is returned; otherwise the {@code char}
* value at {@code index} is returned.
*
* @param seq
* the source array of {@code char} units.
* @param index
* the position in {@code seq} from which to retrieve the code
* point.
* @return the Unicode code point or {@code char} value at {@code index} in
* {@code seq}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if the {@code index} is negative or greater than or equal to
* the length of {@code seq}.
* @since 1.5
*/
public static int codePointAt(char[] seq, int index) {
if (seq == null) {
throw new NullPointerException();
}
int len = seq.length;
if (index < 0 || index >= len) {
throw new IndexOutOfBoundsException();
}
char high = seq[index++];
if (index >= len) {
return high;
}
char low = seq[index];
if (isSurrogatePair(high, low)) {
return toCodePoint(high, low);
}
return high;
}
/**
* Returns the code point at {@code index} in the specified array of
* character units, where {@code index} has to be less than {@code limit}.
* If the unit at {@code index} is a high-surrogate unit, {@code index + 1}
* is less than {@code limit} and the unit at {@code index + 1} is a
* low-surrogate unit, then the supplementary code point represented by the
* pair is returned; otherwise the {@code char} value at {@code index} is
* returned.
*
* @param seq
* the source array of {@code char} units.
* @param index
* the position in {@code seq} from which to get the code point.
* @param limit
* the index after the last unit in {@code seq} that can be used.
* @return the Unicode code point or {@code char} value at {@code index} in
* {@code seq}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if {@code index < 0}, {@code index >= limit},
* {@code limit < 0} or if {@code limit} is greater than the
* length of {@code seq}.
* @since 1.5
*/
public static int codePointAt(char[] seq, int index, int limit) {
if (index < 0 || index >= limit || limit < 0 || limit > seq.length) {
throw new IndexOutOfBoundsException();
}
char high = seq[index++];
if (index >= limit) {
return high;
}
char low = seq[index];
if (isSurrogatePair(high, low)) {
return toCodePoint(high, low);
}
return high;
}
/**
* Returns the code point that precedes {@code index} in the specified
* sequence of character units. If the unit at {@code index - 1} is a
* low-surrogate unit, {@code index - 2} is not negative and the unit at
* {@code index - 2} is a high-surrogate unit, then the supplementary code
* point represented by the pair is returned; otherwise the {@code char}
* value at {@code index - 1} is returned.
*
* @param seq
* the source sequence of {@code char} units.
* @param index
* the position in {@code seq} following the code
* point that should be returned.
* @return the Unicode code point or {@code char} value before {@code index}
* in {@code seq}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if the {@code index} is less than 1 or greater than the
* length of {@code seq}.
* @since 1.5
*/
public static int codePointBefore(CharSequence seq, int index) {
if (seq == null) {
throw new NullPointerException();
}
int len = seq.length();
if (index < 1 || index > len) {
throw new IndexOutOfBoundsException();
}
char low = seq.charAt(--index);
if (--index < 0) {
return low;
}
char high = seq.charAt(index);
if (isSurrogatePair(high, low)) {
return toCodePoint(high, low);
}
return low;
}
/**
* Returns the code point that precedes {@code index} in the specified
* array of character units. If the unit at {@code index - 1} is a
* low-surrogate unit, {@code index - 2} is not negative and the unit at
* {@code index - 2} is a high-surrogate unit, then the supplementary code
* point represented by the pair is returned; otherwise the {@code char}
* value at {@code index - 1} is returned.
*
* @param seq
* the source array of {@code char} units.
* @param index
* the position in {@code seq} following the code
* point that should be returned.
* @return the Unicode code point or {@code char} value before {@code index}
* in {@code seq}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if the {@code index} is less than 1 or greater than the
* length of {@code seq}.
* @since 1.5
*/
public static int codePointBefore(char[] seq, int index) {
if (seq == null) {
throw new NullPointerException();
}
int len = seq.length;
if (index < 1 || index > len) {
throw new IndexOutOfBoundsException();
}
char low = seq[--index];
if (--index < 0) {
return low;
}
char high = seq[index];
if (isSurrogatePair(high, low)) {
return toCodePoint(high, low);
}
return low;
}
/**
* Returns the code point that precedes the {@code index} in the specified
* array of character units and is not less than {@code start}. If the unit
* at {@code index - 1} is a low-surrogate unit, {@code index - 2} is not
* less than {@code start} and the unit at {@code index - 2} is a
* high-surrogate unit, then the supplementary code point represented by the
* pair is returned; otherwise the {@code char} value at {@code index - 1}
* is returned.
*
* @param seq
* the source array of {@code char} units.
* @param index
* the position in {@code seq} following the code point that
* should be returned.
* @param start
* the index of the first element in {@code seq}.
* @return the Unicode code point or {@code char} value before {@code index}
* in {@code seq}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if the {@code index <= start}, {@code start < 0},
* {@code index} is greater than the length of {@code seq}, or
* if {@code start} is equal or greater than the length of
* {@code seq}.
* @since 1.5
*/
public static int codePointBefore(char[] seq, int index, int start) {
if (seq == null) {
throw new NullPointerException();
}
int len = seq.length;
if (index <= start || index > len || start < 0 || start >= len) {
throw new IndexOutOfBoundsException();
}
char low = seq[--index];
if (--index < start) {
return low;
}
char high = seq[index];
if (isSurrogatePair(high, low)) {
return toCodePoint(high, low);
}
return low;
}
/**
* Converts the specified Unicode code point into a UTF-16 encoded sequence
* and copies the value(s) into the char array {@code dst}, starting at
* index {@code dstIndex}.
*
* @param codePoint
* the Unicode code point to encode.
* @param dst
* the destination array to copy the encoded value into.
* @param dstIndex
* the index in {@code dst} from where to start copying.
* @return the number of {@code char} value units copied into {@code dst}.
* @throws IllegalArgumentException if {@code codePoint} is not a valid code point.
* @throws NullPointerException
* if {@code dst} is {@code null}.
* @throws IndexOutOfBoundsException
* if {@code dstIndex} is negative, greater than or equal to
* {@code dst.length} or equals {@code dst.length - 1} when
* {@code codePoint} is a
* {@link #isSupplementaryCodePoint(int) supplementary code point}.
* @since 1.5
*/
public static int toChars(int codePoint, char[] dst, int dstIndex) {
checkValidCodePoint(codePoint);
if (dst == null) {
throw new NullPointerException();
}
if (dstIndex < 0 || dstIndex >= dst.length) {
throw new IndexOutOfBoundsException();
}
if (isSupplementaryCodePoint(codePoint)) {
if (dstIndex == dst.length - 1) {
throw new IndexOutOfBoundsException();
}
// See RFC 2781, Section 2.1
// http://www.ietf.org/rfc/rfc2781.txt
int cpPrime = codePoint - 0x10000;
int high = 0xD800 | ((cpPrime >> 10) & 0x3FF);
int low = 0xDC00 | (cpPrime & 0x3FF);
dst[dstIndex] = (char) high;
dst[dstIndex + 1] = (char) low;
return 2;
}
dst[dstIndex] = (char) codePoint;
return 1;
}
/**
* Converts the specified Unicode code point into a UTF-16 encoded sequence
* and returns it as a char array.
*
* @param codePoint
* the Unicode code point to encode.
* @return the UTF-16 encoded char sequence. If {@code codePoint} is a
* {@link #isSupplementaryCodePoint(int) supplementary code point},
* then the returned array contains two characters, otherwise it
* contains just one character.
* @throws IllegalArgumentException if {@code codePoint} is not a valid code point.
* @since 1.5
*/
public static char[] toChars(int codePoint) {
checkValidCodePoint(codePoint);
if (isSupplementaryCodePoint(codePoint)) {
int cpPrime = codePoint - 0x10000;
int high = 0xD800 | ((cpPrime >> 10) & 0x3FF);
int low = 0xDC00 | (cpPrime & 0x3FF);
return new char[] { (char) high, (char) low };
}
return new char[] { (char) codePoint };
}
/**
* Counts the number of Unicode code points in the subsequence of the
* specified character sequence, as delineated by {@code beginIndex} and
* {@code endIndex}. Any surrogate values with missing pair values will be
* counted as one code point.
*
* @param seq
* the {@code CharSequence} to look through.
* @param beginIndex
* the inclusive index to begin counting at.
* @param endIndex
* the exclusive index to stop counting at.
* @return the number of Unicode code points.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if {@code beginIndex < 0}, {@code beginIndex > endIndex} or
* if {@code endIndex} is greater than the length of {@code seq}.
* @since 1.5
*/
public static int codePointCount(CharSequence seq, int beginIndex,
int endIndex) {
if (seq == null) {
throw new NullPointerException();
}
int len = seq.length();
if (beginIndex < 0 || endIndex > len || beginIndex > endIndex) {
throw new IndexOutOfBoundsException();
}
int result = 0;
for (int i = beginIndex; i < endIndex; i++) {
char c = seq.charAt(i);
if (isHighSurrogate(c)) {
if (++i < endIndex) {
c = seq.charAt(i);
if (!isLowSurrogate(c)) {
result++;
}
}
}
result++;
}
return result;
}
/**
* Counts the number of Unicode code points in the subsequence of the
* specified char array, as delineated by {@code offset} and {@code count}.
* Any surrogate values with missing pair values will be counted as one code
* point.
*
* @param seq
* the char array to look through
* @param offset
* the inclusive index to begin counting at.
* @param count
* the number of {@code char} values to look through in
* {@code seq}.
* @return the number of Unicode code points.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if {@code offset < 0}, {@code count < 0} or if
* {@code offset + count} is greater than the length of
* {@code seq}.
* @since 1.5
*/
public static int codePointCount(char[] seq, int offset, int count) {
Arrays.checkOffsetAndCount(seq.length, offset, count);
int endIndex = offset + count;
int result = 0;
for (int i = offset; i < endIndex; i++) {
char c = seq[i];
if (isHighSurrogate(c)) {
if (++i < endIndex) {
c = seq[i];
if (!isLowSurrogate(c)) {
result++;
}
}
}
result++;
}
return result;
}
/**
* Determines the index in the specified character sequence that is offset
* {@code codePointOffset} code points from {@code index}.
*
* @param seq
* the character sequence to find the index in.
* @param index
* the start index in {@code seq}.
* @param codePointOffset
* the number of code points to look backwards or forwards; may
* be a negative or positive value.
* @return the index in {@code seq} that is {@code codePointOffset} code
* points away from {@code index}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if {@code index < 0}, {@code index} is greater than the
* length of {@code seq}, or if there are not enough values in
* {@code seq} to skip {@code codePointOffset} code points
* forwards or backwards (if {@code codePointOffset} is
* negative) from {@code index}.
* @since 1.5
*/
public static int offsetByCodePoints(CharSequence seq, int index, int codePointOffset) {
if (seq == null) {
throw new NullPointerException();
}
int len = seq.length();
if (index < 0 || index > len) {
throw new IndexOutOfBoundsException();
}
if (codePointOffset == 0) {
return index;
}
if (codePointOffset > 0) {
int codePoints = codePointOffset;
int i = index;
while (codePoints > 0) {
codePoints--;
if (i >= len) {
throw new IndexOutOfBoundsException();
}
if (isHighSurrogate(seq.charAt(i))) {
int next = i + 1;
if (next < len && isLowSurrogate(seq.charAt(next))) {
i++;
}
}
i++;
}
return i;
}
int codePoints = -codePointOffset;
int i = index;
while (codePoints > 0) {
codePoints--;
i--;
if (i < 0) {
throw new IndexOutOfBoundsException();
}
if (isLowSurrogate(seq.charAt(i))) {
int prev = i - 1;
if (prev >= 0 && isHighSurrogate(seq.charAt(prev))) {
i--;
}
}
}
return i;
}
/**
* Determines the index in a subsequence of the specified character array
* that is offset {@code codePointOffset} code points from {@code index}.
* The subsequence is delineated by {@code start} and {@code count}.
*
* @param seq
* the character array to find the index in.
* @param start
* the inclusive index that marks the beginning of the
* subsequence.
* @param count
* the number of {@code char} values to include within the
* subsequence.
* @param index
* the start index in the subsequence of the char array.
* @param codePointOffset
* the number of code points to look backwards or forwards; may
* be a negative or positive value.
* @return the index in {@code seq} that is {@code codePointOffset} code
* points away from {@code index}.
* @throws NullPointerException
* if {@code seq} is {@code null}.
* @throws IndexOutOfBoundsException
* if {@code start < 0}, {@code count < 0},
* {@code index < start}, {@code index > start + count},
* {@code start + count} is greater than the length of
* {@code seq}, or if there are not enough values in
* {@code seq} to skip {@code codePointOffset} code points
* forward or backward (if {@code codePointOffset} is
* negative) from {@code index}.
* @since 1.5
*/
public static int offsetByCodePoints(char[] seq, int start, int count,
int index, int codePointOffset) {
Arrays.checkOffsetAndCount(seq.length, start, count);
int end = start + count;
if (index < start || index > end) {
throw new IndexOutOfBoundsException();
}
if (codePointOffset == 0) {
return index;
}
if (codePointOffset > 0) {
int codePoints = codePointOffset;
int i = index;
while (codePoints > 0) {
codePoints--;
if (i >= end) {
throw new IndexOutOfBoundsException();
}
if (isHighSurrogate(seq[i])) {
int next = i + 1;
if (next < end && isLowSurrogate(seq[next])) {
i++;
}
}
i++;
}
return i;
}
int codePoints = -codePointOffset;
int i = index;
while (codePoints > 0) {
codePoints--;
i--;
if (i < start) {
throw new IndexOutOfBoundsException();
}
if (isLowSurrogate(seq[i])) {
int prev = i - 1;
if (prev >= start && isHighSurrogate(seq[prev])) {
i--;
}
}
}
return i;
}
/**
* Convenience method to determine the value of the specified character
* {@code c} in the supplied radix. The value of {@code radix} must be
* between MIN_RADIX and MAX_RADIX.
*
* @param c
* the character to determine the value of.
* @param radix
* the radix.
* @return the value of {@code c} in {@code radix} if {@code radix} lies
* between {@link #MIN_RADIX} and {@link #MAX_RADIX}; -1 otherwise.
*/
public static int digit(char c, int radix) {
return digit((int) c, radix);
}
/**
* Convenience method to determine the value of the character
* {@code codePoint} in the supplied radix. The value of {@code radix} must
* be between MIN_RADIX and MAX_RADIX.
*
* @param codePoint
* the character, including supplementary characters.
* @param radix
* the radix.
* @return if {@code radix} lies between {@link #MIN_RADIX} and
* {@link #MAX_RADIX} then the value of the character in the radix;
* -1 otherwise.
*/
public static int digit(int codePoint, int radix) {
if (radix < MIN_RADIX || radix > MAX_RADIX) {
return -1;
}
if (codePoint < 128) {
// Optimized for ASCII
int result = -1;
if ('0' <= codePoint && codePoint <= '9') {
result = codePoint - '0';
} else if ('a' <= codePoint && codePoint <= 'z') {
result = 10 + (codePoint - 'a');
} else if ('A' <= codePoint && codePoint <= 'Z') {
result = 10 + (codePoint - 'A');
}
return result < radix ? result : -1;
}
return digitImpl(codePoint, radix);
}
private static native int digitImpl(int codePoint, int radix);
/**
* Compares this object with the specified object and indicates if they are
* equal. In order to be equal, {@code object} must be an instance of
* {@code Character} and have the same char value as this object.
*
* @param object
* the object to compare this double with.
* @return {@code true} if the specified object is equal to this
* {@code Character}; {@code false} otherwise.
*/
@Override
public boolean equals(Object object) {
return (object instanceof Character) && (((Character) object).value == value);
}
/**
* Returns the character which represents the specified digit in the
* specified radix. The {@code radix} must be between {@code MIN_RADIX} and
* {@code MAX_RADIX} inclusive; {@code digit} must not be negative and
* smaller than {@code radix}. If any of these conditions does not hold, 0
* is returned.
*
* @param digit
* the integer value.
* @param radix
* the radix.
* @return the character which represents the {@code digit} in the
* {@code radix}.
*/
public static char forDigit(int digit, int radix) {
if (MIN_RADIX <= radix && radix <= MAX_RADIX) {
if (digit >= 0 && digit < radix) {
return (char) (digit < 10 ? digit + '0' : digit + 'a' - 10);
}
}
return 0;
}
/**
* Returns the name of the given code point, or null if the code point is unassigned.
*
* <p>As a fallback mechanism this method returns strings consisting of the Unicode
* block name (with underscores replaced by spaces), a single space, and the uppercase
* hex value of the code point, using as few digits as necessary.
*
* <p>Examples:
* <ul>
* <li>{@code Character.getName(0)} returns "NULL".
* <li>{@code Character.getName('e')} returns "LATIN SMALL LETTER E".
* <li>{@code Character.getName('\u0666')} returns "ARABIC-INDIC DIGIT SIX".
* <li>{@code Character.getName(0xe000)} returns "PRIVATE USE AREA E000".
* </ul>
*
* @throws IllegalArgumentException if {@code codePoint} is not a valid code point.
* @since 1.7
* @hide 1.7
*/
public static String getName(int codePoint) {
checkValidCodePoint(codePoint);
if (getType(codePoint) == Character.UNASSIGNED) {
return null;
}
String result = getNameImpl(codePoint);
if (result == null) {
String blockName = Character.UnicodeBlock.of(codePoint).toString().replace('_', ' ');
result = blockName + " " + IntegralToString.intToHexString(codePoint, true, 0);
}
return result;
}
private static native String getNameImpl(int codePoint);
/**
* Returns the numeric value of the specified Unicode character.
* See {@link #getNumericValue(int)}.
*
* @param c the character
* @return a non-negative numeric integer value if a numeric value for
* {@code c} exists, -1 if there is no numeric value for {@code c},
* -2 if the numeric value can not be represented as an integer.
*/
public static int getNumericValue(char c) {
return getNumericValue((int) c);
}
/**
* Gets the numeric value of the specified Unicode code point. For example,
* the code point '\u216B' stands for the Roman number XII, which has the
* numeric value 12.
*
* <p>There are two points of divergence between this method and the Unicode
* specification. This method treats the letters a-z (in both upper and lower
* cases, and their full-width variants) as numbers from 10 to 35. The
* Unicode specification also supports the idea of code points with non-integer
* numeric values; this method does not (except to the extent of returning -2
* for such code points).
*
* @param codePoint the code point
* @return a non-negative numeric integer value if a numeric value for
* {@code codePoint} exists, -1 if there is no numeric value for
* {@code codePoint}, -2 if the numeric value can not be
* represented with an integer.
*/
public static int getNumericValue(int codePoint) {
// This is both an optimization and papers over differences between Java and ICU.
if (codePoint < 128) {
if (codePoint >= '0' && codePoint <= '9') {
return codePoint - '0';
}
if (codePoint >= 'a' && codePoint <= 'z') {
return codePoint - ('a' - 10);
}
if (codePoint >= 'A' && codePoint <= 'Z') {
return codePoint - ('A' - 10);
}
return -1;
}
// Full-width uppercase A-Z.
if (codePoint >= 0xff21 && codePoint <= 0xff3a) {
return codePoint - 0xff17;
}
// Full-width lowercase a-z.
if (codePoint >= 0xff41 && codePoint <= 0xff5a) {
return codePoint - 0xff37;
}
return getNumericValueImpl(codePoint);
}
private static native int getNumericValueImpl(int codePoint);
/**
* Gets the general Unicode category of the specified character.
*
* @param c
* the character to get the category of.
* @return the Unicode category of {@code c}.
*/
public static int getType(char c) {
return getType((int) c);
}
/**
* Gets the general Unicode category of the specified code point.
*
* @param codePoint
* the Unicode code point to get the category of.
* @return the Unicode category of {@code codePoint}.
*/
public static int getType(int codePoint) {
int type = getTypeImpl(codePoint);
// The type values returned by ICU are not RI-compatible. The RI skips the value 17.
if (type <= Character.FORMAT) {
return type;
}
return (type + 1);
}
private static native int getTypeImpl(int codePoint);
/**
* Gets the Unicode directionality of the specified character.
*
* @param c
* the character to get the directionality of.
* @return the Unicode directionality of {@code c}.
*/
public static byte getDirectionality(char c) {
return getDirectionality((int)c);
}
/**
* Gets the Unicode directionality of the specified character.
*
* @param codePoint
* the Unicode code point to get the directionality of.
* @return the Unicode directionality of {@code codePoint}.
*/
public static byte getDirectionality(int codePoint) {
if (getType(codePoint) == Character.UNASSIGNED) {
return Character.DIRECTIONALITY_UNDEFINED;
}
byte directionality = getDirectionalityImpl(codePoint);
if (directionality == -1) {
return -1;
}
return DIRECTIONALITY[directionality];
}
private static native byte getDirectionalityImpl(int codePoint);
/**
* Indicates whether the specified character is mirrored.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is mirrored; {@code false}
* otherwise.
*/
public static boolean isMirrored(char c) {
return isMirrored((int) c);
}
/**
* Indicates whether the specified code point is mirrored.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is mirrored, {@code false}
* otherwise.
*/
public static boolean isMirrored(int codePoint) {
return isMirroredImpl(codePoint);
}
private static native boolean isMirroredImpl(int codePoint);
@Override
public int hashCode() {
return value;
}
/**
* Returns the high surrogate for the given code point. The result is meaningless if
* the given code point is not a supplementary character.
* @since 1.7
* @hide 1.7
*/
public static char highSurrogate(int codePoint) {
return (char) ((codePoint >> 10) + 0xd7c0);
}
/**
* Returns the low surrogate for the given code point. The result is meaningless if
* the given code point is not a supplementary character.
* @since 1.7
* @hide 1.7
*/
public static char lowSurrogate(int codePoint) {
return (char) ((codePoint & 0x3ff) | 0xdc00);
}
/**
* Tests whether the given code point is in the Basic Multilingual Plane (BMP).
* Such code points can be represented by a single {@code char}.
* @since 1.7
* @hide 1.7
*/
public static boolean isBmpCodePoint(int codePoint) {
return codePoint >= 0 && codePoint <= 0xffff;
}
/**
* Indicates whether the specified character is defined in the Unicode
* specification.
*
* @param c
* the character to check.
* @return {@code true} if the general Unicode category of the character is
* not {@code UNASSIGNED}; {@code false} otherwise.
*/
public static boolean isDefined(char c) {
return isDefinedImpl(c);
}
/**
* Indicates whether the specified code point is defined in the Unicode
* specification.
*
* @param codePoint
* the code point to check.
* @return {@code true} if the general Unicode category of the code point is
* not {@code UNASSIGNED}; {@code false} otherwise.
*/
public static boolean isDefined(int codePoint) {
return isDefinedImpl(codePoint);
}
private static native boolean isDefinedImpl(int codePoint);
/**
* Indicates whether the specified character is a digit.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a digit; {@code false}
* otherwise.
*/
public static boolean isDigit(char c) {
return isDigit((int) c);
}
/**
* Indicates whether the specified code point is a digit.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a digit; {@code false}
* otherwise.
*/
public static boolean isDigit(int codePoint) {
// Optimized case for ASCII
if ('0' <= codePoint && codePoint <= '9') {
return true;
}
if (codePoint < 1632) {
return false;
}
return isDigitImpl(codePoint);
}
private static native boolean isDigitImpl(int codePoint);
/**
* Indicates whether the specified character is ignorable in a Java or
* Unicode identifier.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is ignorable; {@code false} otherwise.
*/
public static boolean isIdentifierIgnorable(char c) {
return isIdentifierIgnorable((int) c);
}
/**
* Indicates whether the specified code point is ignorable in a Java or
* Unicode identifier.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is ignorable; {@code false}
* otherwise.
*/
public static boolean isIdentifierIgnorable(int codePoint) {
// This is both an optimization and papers over differences between Java and ICU.
if (codePoint < 0x600) {
return (codePoint >= 0 && codePoint <= 8) || (codePoint >= 0xe && codePoint <= 0x1b) ||
(codePoint >= 0x7f && codePoint <= 0x9f) || (codePoint == 0xad);
}
return isIdentifierIgnorableImpl(codePoint);
}
private static native boolean isIdentifierIgnorableImpl(int codePoint);
/**
* Indicates whether the specified character is an ISO control character.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is an ISO control character;
* {@code false} otherwise.
*/
public static boolean isISOControl(char c) {
return isISOControl((int) c);
}
/**
* Indicates whether the specified code point is an ISO control character.
*
* @param c
* the code point to check.
* @return {@code true} if {@code c} is an ISO control character;
* {@code false} otherwise.
*/
public static boolean isISOControl(int c) {
return (c >= 0 && c <= 0x1f) || (c >= 0x7f && c <= 0x9f);
}
/**
* Indicates whether the specified character is a valid part of a Java
* identifier other than the first character.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is valid as part of a Java identifier;
* {@code false} otherwise.
*/
public static boolean isJavaIdentifierPart(char c) {
return isJavaIdentifierPart((int) c);
}
/**
* Indicates whether the specified code point is a valid part of a Java
* identifier other than the first character.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code c} is valid as part of a Java identifier;
* {@code false} otherwise.
*/
public static boolean isJavaIdentifierPart(int codePoint) {
// Use precomputed bitmasks to optimize the ASCII range.
if (codePoint < 64) {
return (0x3ff00100fffc1ffL & (1L << codePoint)) != 0;
} else if (codePoint < 128) {
return (0x87fffffe87fffffeL & (1L << (codePoint - 64))) != 0;
}
int type = getType(codePoint);
return (type >= UPPERCASE_LETTER && type <= OTHER_LETTER)
|| type == CURRENCY_SYMBOL || type == CONNECTOR_PUNCTUATION
|| (type >= DECIMAL_DIGIT_NUMBER && type <= LETTER_NUMBER)
|| type == COMBINING_SPACING_MARK || type == NON_SPACING_MARK
|| (codePoint >= 0 && codePoint <= 8) || (codePoint >= 0xe && codePoint <= 0x1b)
|| (codePoint >= 0x7f && codePoint <= 0x9f) || type == FORMAT;
}
/**
* Indicates whether the specified character is a valid first character for
* a Java identifier.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a valid first character of a Java
* identifier; {@code false} otherwise.
*/
public static boolean isJavaIdentifierStart(char c) {
return isJavaIdentifierStart((int) c);
}
/**
* Indicates whether the specified code point is a valid first character for
* a Java identifier.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a valid start of a Java
* identifier; {@code false} otherwise.
*/
public static boolean isJavaIdentifierStart(int codePoint) {
// Use precomputed bitmasks to optimize the ASCII range.
if (codePoint < 64) {
return (codePoint == '$'); // There's only one character in this range.
} else if (codePoint < 128) {
return (0x7fffffe87fffffeL & (1L << (codePoint - 64))) != 0;
}
int type = getType(codePoint);
return (type >= UPPERCASE_LETTER && type <= OTHER_LETTER) || type == CURRENCY_SYMBOL
|| type == CONNECTOR_PUNCTUATION || type == LETTER_NUMBER;
}
/**
* Indicates whether the specified character is a Java letter.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a Java letter; {@code false}
* otherwise.
* @deprecated Use {@link #isJavaIdentifierStart(char)}
*/
@Deprecated
public static boolean isJavaLetter(char c) {
return isJavaIdentifierStart(c);
}
/**
* Indicates whether the specified character is a Java letter or digit
* character.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a Java letter or digit;
* {@code false} otherwise.
* @deprecated Use {@link #isJavaIdentifierPart(char)}
*/
@Deprecated
public static boolean isJavaLetterOrDigit(char c) {
return isJavaIdentifierPart(c);
}
/**
* Indicates whether the specified character is a letter.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a letter; {@code false} otherwise.
*/
public static boolean isLetter(char c) {
return isLetter((int) c);
}
/**
* Indicates whether the specified code point is a letter.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a letter; {@code false}
* otherwise.
*/
public static boolean isLetter(int codePoint) {
if (('A' <= codePoint && codePoint <= 'Z') || ('a' <= codePoint && codePoint <= 'z')) {
return true;
}
if (codePoint < 128) {
return false;
}
return isLetterImpl(codePoint);
}
private static native boolean isLetterImpl(int codePoint);
/**
* Indicates whether the specified character is a letter or a digit.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a letter or a digit; {@code false}
* otherwise.
*/
public static boolean isLetterOrDigit(char c) {
return isLetterOrDigit((int) c);
}
/**
* Indicates whether the specified code point is a letter or a digit.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a letter or a digit;
* {@code false} otherwise.
*/
public static boolean isLetterOrDigit(int codePoint) {
// Optimized case for ASCII
if (('A' <= codePoint && codePoint <= 'Z') || ('a' <= codePoint && codePoint <= 'z')) {
return true;
}
if ('0' <= codePoint && codePoint <= '9') {
return true;
}
if (codePoint < 128) {
return false;
}
return isLetterOrDigitImpl(codePoint);
}
private static native boolean isLetterOrDigitImpl(int codePoint);
/**
* Indicates whether the specified character is a lower case letter.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a lower case letter; {@code false}
* otherwise.
*/
public static boolean isLowerCase(char c) {
return isLowerCase((int) c);
}
/**
* Indicates whether the specified code point is a lower case letter.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a lower case letter;
* {@code false} otherwise.
*/
public static boolean isLowerCase(int codePoint) {
// Optimized case for ASCII
if ('a' <= codePoint && codePoint <= 'z') {
return true;
}
if (codePoint < 128) {
return false;
}
return isLowerCaseImpl(codePoint);
}
private static native boolean isLowerCaseImpl(int codePoint);
/**
* Indicates whether the specified character is a Java space.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a Java space; {@code false}
* otherwise.
* @deprecated Use {@link #isWhitespace(char)}
*/
@Deprecated
public static boolean isSpace(char c) {
return c == '\n' || c == '\t' || c == '\f' || c == '\r' || c == ' ';
}
/**
* Indicates whether the specified character is a Unicode space character.
* That is, if it is a member of one of the Unicode categories Space
* Separator, Line Separator, or Paragraph Separator.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a Unicode space character,
* {@code false} otherwise.
*/
public static boolean isSpaceChar(char c) {
return isSpaceChar((int) c);
}
/**
* Indicates whether the specified code point is a Unicode space character.
* That is, if it is a member of one of the Unicode categories Space
* Separator, Line Separator, or Paragraph Separator.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a Unicode space character,
* {@code false} otherwise.
*/
public static boolean isSpaceChar(int codePoint) {
if (codePoint == 0x20 || codePoint == 0xa0 || codePoint == 0x1680) {
return true;
}
if (codePoint < 0x2000) {
return false;
}
if (codePoint <= 0xffff) {
return codePoint <= 0x200b || codePoint == 0x2028 || codePoint == 0x2029 ||
codePoint == 0x202f || codePoint == 0x3000;
}
return isSpaceCharImpl(codePoint);
}
private static native boolean isSpaceCharImpl(int codePoint);
/**
* Indicates whether the specified character is a titlecase character.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a titlecase character, {@code false}
* otherwise.
*/
public static boolean isTitleCase(char c) {
return isTitleCaseImpl(c);
}
/**
* Indicates whether the specified code point is a titlecase character.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a titlecase character,
* {@code false} otherwise.
*/
public static boolean isTitleCase(int codePoint) {
return isTitleCaseImpl(codePoint);
}
private static native boolean isTitleCaseImpl(int codePoint);
/**
* Indicates whether the specified character is valid as part of a Unicode
* identifier other than the first character.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is valid as part of a Unicode
* identifier; {@code false} otherwise.
*/
public static boolean isUnicodeIdentifierPart(char c) {
return isUnicodeIdentifierPartImpl(c);
}
/**
* Indicates whether the specified code point is valid as part of a Unicode
* identifier other than the first character.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is valid as part of a Unicode
* identifier; {@code false} otherwise.
*/
public static boolean isUnicodeIdentifierPart(int codePoint) {
return isUnicodeIdentifierPartImpl(codePoint);
}
private static native boolean isUnicodeIdentifierPartImpl(int codePoint);
/**
* Indicates whether the specified character is a valid initial character
* for a Unicode identifier.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a valid first character for a
* Unicode identifier; {@code false} otherwise.
*/
public static boolean isUnicodeIdentifierStart(char c) {
return isUnicodeIdentifierStartImpl(c);
}
/**
* Indicates whether the specified code point is a valid initial character
* for a Unicode identifier.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a valid first character for
* a Unicode identifier; {@code false} otherwise.
*/
public static boolean isUnicodeIdentifierStart(int codePoint) {
return isUnicodeIdentifierStartImpl(codePoint);
}
private static native boolean isUnicodeIdentifierStartImpl(int codePoint);
/**
* Indicates whether the specified character is an upper case letter.
*
* @param c
* the character to check.
* @return {@code true} if {@code c} is a upper case letter; {@code false}
* otherwise.
*/
public static boolean isUpperCase(char c) {
return isUpperCase((int) c);
}
/**
* Indicates whether the specified code point is an upper case letter.
*
* @param codePoint
* the code point to check.
* @return {@code true} if {@code codePoint} is a upper case letter;
* {@code false} otherwise.
*/
public static boolean isUpperCase(int codePoint) {
// Optimized case for ASCII
if ('A' <= codePoint && codePoint <= 'Z') {
return true;
}
if (codePoint < 128) {
return false;
}
return isUpperCaseImpl(codePoint);
}
private static native boolean isUpperCaseImpl(int codePoint);
/**
* Indicates whether the specified character is a whitespace character in
* Java.
*
* @param c
* the character to check.
* @return {@code true} if the supplied {@code c} is a whitespace character
* in Java; {@code false} otherwise.
*/
public static boolean isWhitespace(char c) {
return isWhitespace((int) c);
}
/**
* Indicates whether the specified code point is a whitespace character in
* Java.
*
* @param codePoint
* the code point to check.
* @return {@code true} if the supplied {@code c} is a whitespace character
* in Java; {@code false} otherwise.
*/
public static boolean isWhitespace(int codePoint) {
// This is both an optimization and papers over differences between Java and ICU.
if ((codePoint >= 0x1c && codePoint <= 0x20) || (codePoint >= 0x9 && codePoint <= 0xd)) {
return true;
}
if (codePoint == 0x1680) {
return true;
}
if (codePoint < 0x2000 || codePoint == 0x2007) {
return false;
}
if (codePoint <= 0xffff) {
return codePoint <= 0x200b || codePoint == 0x2028 || codePoint == 0x2029 ||
codePoint == 0x3000;
}
return isWhitespaceImpl(codePoint);
}
private static native boolean isWhitespaceImpl(int codePoint);
/**
* Reverses the order of the first and second byte in the specified
* character.
*
* @param c
* the character to reverse.
* @return the character with reordered bytes.
*/
public static char reverseBytes(char c) {
return (char)((c<<8) | (c>>8));
}
/**
* Returns the lower case equivalent for the specified character if the
* character is an upper case letter. Otherwise, the specified character is
* returned unchanged.
*
* @param c
* the character
* @return if {@code c} is an upper case character then its lower case
* counterpart, otherwise just {@code c}.
*/
public static char toLowerCase(char c) {
return (char) toLowerCase((int) c);
}
/**
* Returns the lower case equivalent for the specified code point if it is
* an upper case letter. Otherwise, the specified code point is returned
* unchanged.
*
* @param codePoint
* the code point to check.
* @return if {@code codePoint} is an upper case character then its lower
* case counterpart, otherwise just {@code codePoint}.
*/
public static int toLowerCase(int codePoint) {
// Optimized case for ASCII
if ('A' <= codePoint && codePoint <= 'Z') {
return (char) (codePoint + ('a' - 'A'));
}
if (codePoint < 192) {
return codePoint;
}
return toLowerCaseImpl(codePoint);
}
private static native int toLowerCaseImpl(int codePoint);
@Override
public String toString() {
return String.valueOf(value);
}
/**
* Converts the specified character to its string representation.
*
* @param value
* the character to convert.
* @return the character converted to a string.
*/
public static String toString(char value) {
return String.valueOf(value);
}
/**
* Returns the title case equivalent for the specified character if it
* exists. Otherwise, the specified character is returned unchanged.
*
* @param c
* the character to convert.
* @return the title case equivalent of {@code c} if it exists, otherwise
* {@code c}.
*/
public static char toTitleCase(char c) {
return (char) toTitleCaseImpl(c);
}
/**
* Returns the title case equivalent for the specified code point if it
* exists. Otherwise, the specified code point is returned unchanged.
*
* @param codePoint
* the code point to convert.
* @return the title case equivalent of {@code codePoint} if it exists,
* otherwise {@code codePoint}.
*/
public static int toTitleCase(int codePoint) {
return toTitleCaseImpl(codePoint);
}
private static native int toTitleCaseImpl(int codePoint);
/**
* Returns the upper case equivalent for the specified character if the
* character is a lower case letter. Otherwise, the specified character is
* returned unchanged.
*
* @param c
* the character to convert.
* @return if {@code c} is a lower case character then its upper case
* counterpart, otherwise just {@code c}.
*/
public static char toUpperCase(char c) {
return (char) toUpperCase((int) c);
}
/**
* Returns the upper case equivalent for the specified code point if the
* code point is a lower case letter. Otherwise, the specified code point is
* returned unchanged.
*
* @param codePoint
* the code point to convert.
* @return if {@code codePoint} is a lower case character then its upper
* case counterpart, otherwise just {@code codePoint}.
*/
public static int toUpperCase(int codePoint) {
// Optimized case for ASCII
if ('a' <= codePoint && codePoint <= 'z') {
return (char) (codePoint - ('a' - 'A'));
}
if (codePoint < 181) {
return codePoint;
}
return toUpperCaseImpl(codePoint);
}
private static native int toUpperCaseImpl(int codePoint);
}