Here you can find the source of shift(ByteBuffer buffer, int distance)
public static boolean shift(ByteBuffer buffer, int distance)
//package com.java2s; /*/*from w w w. j a v a 2s . c o m*/ * Copyright 2017 SIP3.IO CORP. * * 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. */ import java.nio.ByteBuffer; public class Main { public static boolean shift(ByteBuffer buffer, int distance) { if (distance <= 0) { throw new IllegalArgumentException("Negative distance: " + distance); } int limit = buffer.limit(); int position = buffer.position() + distance; if (position > limit) { buffer.position(limit); return false; } else { buffer.position(position); return true; } } }