151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved. 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is free software; you can redistribute it and/or modify it 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * under the terms of the GNU General Public License version 2 only, as 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * published by the Free Software Foundation. Oracle designates this 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * particular file as subject to the "Classpath" exception as provided 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * by Oracle in the LICENSE file that accompanied this code. 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is distributed in the hope that it will be useful, but WITHOUT 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * version 2 for more details (a copy is included in the LICENSE file that 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * accompanied this code). 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You should have received a copy of the GNU General Public License version 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2 along with this work; if not, write to the Free Software Foundation, 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or visit www.oracle.com if you need additional information or have any 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * questions. 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipackage java.nio; 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/** 3051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * A typesafe enumeration for byte orders. 3151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 3251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @author Mark Reinhold 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @author JSR-51 Expert Group 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @since 1.4 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipublic final class ByteOrder { 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private String name; 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private ByteOrder(String name) { 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.name = name; 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Constant denoting big-endian byte order. In this order, the bytes of a 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * multibyte value are ordered from most significant to least significant. 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * </p> 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public static final ByteOrder BIG_ENDIAN 51190a49036750b8bb6c979d958ed56aa3fb4f408aShubham Ajmera = new ByteOrder("BIG_ENDIAN"); 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Constant denoting little-endian byte order. In this order, the bytes of 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * a multibyte value are ordered from least significant to most 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * significant. </p> 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public static final ByteOrder LITTLE_ENDIAN 59190a49036750b8bb6c979d958ed56aa3fb4f408aShubham Ajmera = new ByteOrder("LITTLE_ENDIAN"); 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 6251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Retrieves the native byte order of the underlying platform. 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <p> This method is defined so that performance-sensitive Java code can 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * allocate direct buffers with the same byte order as the hardware. 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Native code libraries are often more efficient when such buffers are 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * used. </p> 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 69190a49036750b8bb6c979d958ed56aa3fb4f408aShubham Ajmera * @return The native byte order of the hardware upon which this Java 70190a49036750b8bb6c979d958ed56aa3fb4f408aShubham Ajmera * virtual machine is running 7151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 7251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public static ByteOrder nativeOrder() { 7351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return Bits.byteOrder(); 7451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 7651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 7751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Constructs a string describing this object. 7851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 7951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <p> This method returns the string <tt>"BIG_ENDIAN"</tt> for {@link 8051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * #BIG_ENDIAN} and <tt>"LITTLE_ENDIAN"</tt> for {@link #LITTLE_ENDIAN}. 8151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * </p> 8251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 83190a49036750b8bb6c979d958ed56aa3fb4f408aShubham Ajmera * @return The specified string 8451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 8551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public String toString() { 8651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return name; 8751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 8851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 8951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 90