Java tutorial
//package com.java2s; /* Copyright (c) 2010 Xiaoyun Zhu * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ import java.nio.ByteBuffer; public class Main { /** * Stores substring in bb * * @param bb * @param startIdx * @return new bb limit */ public static final int substring(final ByteBuffer bb, final int startIdx) { final int limit = bb.limit(); if (startIdx >= limit) { bb.limit(0); return 0; } else { final byte[] array = bb.array(); int i = 0; int j = startIdx; while (j < limit) { array[i] = array[j]; j++; i++; } bb.limit(limit - startIdx); return bb.limit(); } } }