Java tutorial
//package com.java2s; /* * 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. */ import java.io.IOException; import java.io.OutputStream; public class Main { /** * Writes a "float" value to a byte array at a given offset. The value is * converted to the opposed endian system while writing. * @param data target byte array * @param offset starting offset in the byte array * @param value value to write */ public static void writeSwappedFloat(byte[] data, int offset, float value) { writeSwappedInteger(data, offset, Float.floatToIntBits(value)); } /** * Writes a "float" value to an OutputStream. The value is * converted to the opposed endian system while writing. * @param output target OutputStream * @param value value to write * @throws IOException in case of an I/O problem */ public static void writeSwappedFloat(OutputStream output, float value) throws IOException { writeSwappedInteger(output, Float.floatToIntBits(value)); } /** * Writes a "int" value to a byte array at a given offset. The value is * converted to the opposed endian system while writing. * @param data target byte array * @param offset starting offset in the byte array * @param value value to write */ public static void writeSwappedInteger(byte[] data, int offset, int value) { data[offset + 0] = (byte) ((value >> 0) & 0xff); data[offset + 1] = (byte) ((value >> 8) & 0xff); data[offset + 2] = (byte) ((value >> 16) & 0xff); data[offset + 3] = (byte) ((value >> 24) & 0xff); } /** * Writes a "int" value to an OutputStream. The value is * converted to the opposed endian system while writing. * @param output target OutputStream * @param value value to write * @throws IOException in case of an I/O problem */ public static void writeSwappedInteger(OutputStream output, int value) throws IOException { output.write((byte) ((value >> 0) & 0xff)); output.write((byte) ((value >> 8) & 0xff)); output.write((byte) ((value >> 16) & 0xff)); output.write((byte) ((value >> 24) & 0xff)); } }