ByteOrder.java

/*
 * Copyright 2000-2002 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 */

package java.nio;


/**
 * A typesafe enumeration for byte orders.
 *
 * @author Mark Reinhold
 * @author JSR-51 Expert Group
 * @since 1.4
 */

public final class ByteOrder {

    private String name;

    private ByteOrder(String name) {
        this.name = name;
    }

    /**
     * Constant denoting big-endian byte order.  In this order, the bytes of a
     * multibyte value are ordered from most significant to least significant.
     * </p>
     */
    public static final ByteOrder BIG_ENDIAN
        = new ByteOrder("BIG_ENDIAN");

    /**
     * Constant denoting little-endian byte order.  In this order, the bytes of
     * a multibyte value are ordered from least significant to most
     * significant.  </p>
     */
    public static final ByteOrder LITTLE_ENDIAN
        = new ByteOrder("LITTLE_ENDIAN");

    /**
     * Retrieves the native byte order of the underlying platform.
     *
     * <p> This method is defined so that performance-sensitive Java code can
     * allocate direct buffers with the same byte order as the hardware.
     * Native code libraries are often more efficient when such buffers are
     * used.  </p>
     *
     * @return  The native byte order of the hardware upon which this Java
     *          virtual machine is running
     */
    public static ByteOrder nativeOrder() {
        return Bits.byteOrder();
    }

    /**
     * Constructs a string describing this object.
     *
     * <p> This method returns the string <tt>"BIG_ENDIAN"</tt> for {@link
     * #BIG_ENDIAN} and <tt>"LITTLE_ENDIAN"</tt> for {@link #LITTLE_ENDIAN}.
     * </p>
     *
     * @return  The specified string
     */
    public String toString() {
        return name;
    }

}