Here you can find the source of intsToBytes(int[][] ints)
public static byte[][] intsToBytes(int[][] ints)
//package com.java2s; /*//from w w w . ja v a 2 s. c om * Copyright 2005 Tom Gibara * * Licensed 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. * */ public class Main { public static byte[][] intsToBytes(int[][] ints) { byte[][] bytes = new byte[ints.length][]; for (int a = 0; a < ints.length; a++) { int[] is = ints[a]; byte[] bs = new byte[is.length]; bytes[a] = bs; for (int i = 0; i < is.length; i++) { int v = is[i]; if (v < 0) v = 0; else if (v > 255) v = 255; bs[i] = (byte) v; } } return bytes; } }