/*
* 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 org.apache.lucene.util;
/**
* Helper methods to ease implementing {@link Object#toString()}.
*/
public final class ToStringUtils {
private ToStringUtils() {} // no instance
public static void byteArray(StringBuilder buffer, byte[] bytes) {
for (int i = 0; i < bytes.length; i++) {
buffer.append("b[").append(i).append("]=").append(bytes[i]);
if (i < bytes.length - 1) {
buffer.append(',');
}
}
}
private final static char [] HEX = "0123456789abcdef".toCharArray();
public static String longHex(long x) {
char [] asHex = new char [16];
for (int i = 16; --i >= 0; x >>>= 4) {
asHex[i] = HEX[(int) x & 0x0F];
}
return "0x" + new String(asHex);
}
}