Here you can find the source of subArray(byte[] src, int offset, int len)
public static byte[] subArray(byte[] src, int offset, int len)
//package com.java2s; /**//from w w w .j av a 2 s. co m * Copyright (c) 2014-2016 by Wen Yu. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Any modifications to this file must keep this entire header intact. * * Change History - most recent changes go on top of previous changes * * ArrayUtils.java * * Who Date Description * ==== ========= ====================================================================== * WY 14Jun2015 Bug fix for toNBits() to use long data type internally * WY 04Jun2015 Rewrote all concatenation related methods * WY 02Jun2015 Bug fix for generic concatenate methods * WY 06Apr2015 Added reverse(byte[]) to reverse byte array elements * WY 06Jan2015 Added reverse() to reverse array elements * WY 10Dec2014 Moved reverseBits() from IMGUtils to here along with BIT_REVERSE_TABLE * WY 08Dec2014 Fixed bug for flipEndian() with more than 32 bit sample data * WY 07Dec2014 Changed method names for byte array to other array types conversion * WY 07Dec2014 Added new methods to work with floating point TIFF images * WY 03Dec2014 Added byteArrayToFloatArray() and byteArrayToDoubleArray() * WY 25Nov2014 Added removeDuplicates() to sort and remove duplicates from int arrays * WY 12Nov2014 Changed the argument sequence for flipEndian() * WY 11Nov2014 Changed flipEndian() to include scan line stride to skip bits * WY 11Nov2014 Added toNBits() to convert byte array to nBits data unit * WY 28Oct2014 Added flipEndian() to work with TIFTweaker mergeTiffImagesEx() */ public class Main { public static byte[] subArray(byte[] src, int offset, int len) { if (offset == 0 && len == src.length) return src; if ((offset < 0 || offset >= src.length) || (offset + len > src.length)) throw new IllegalArgumentException("Copy range out of array bounds"); byte[] dest = new byte[len]; System.arraycopy(src, offset, dest, 0, len); return dest; } }