001 /* ByteOrder.java -- 002 Copyright (C) 2002, 2004 Free Software Foundation, Inc. 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 039 package java.nio; 040 041 /** 042 * @author Michael Koch (konqueror@gmx.de) 043 * @since 1.4 044 */ 045 public final class ByteOrder 046 { 047 /** 048 * Constant indicating big endian byte order. 049 */ 050 public static final ByteOrder BIG_ENDIAN = new ByteOrder(); 051 052 /** 053 * Constant indicating little endian byte order. 054 */ 055 public static final ByteOrder LITTLE_ENDIAN = new ByteOrder(); 056 057 /** 058 * Returns the native byte order of the platform currently running. 059 * 060 * @return the native byte order 061 */ 062 public static ByteOrder nativeOrder() 063 { 064 // Let this fail with an NPE when the property is not set correctly. 065 // Otherwise we risk that NIO is silently working wrong. 066 return (System.getProperty("gnu.cpu.endian").equals("big") 067 ? BIG_ENDIAN : LITTLE_ENDIAN); 068 } 069 070 /** 071 * Returns a string representation of the byte order. 072 * 073 * @return the string 074 */ 075 public String toString() 076 { 077 return this == BIG_ENDIAN ? "BIG_ENDIAN" : "LITTLE_ENDIAN"; 078 } 079 080 // This class can only be instantiated here. 081 private ByteOrder() 082 { 083 } 084 }