Here you can find the source of writeBuffer(FileChannel fc, ByteBuffer buf, int startPos)
public static void writeBuffer(FileChannel fc, ByteBuffer buf, int startPos) throws IOException
//package com.java2s; /* This file is part of VoltDB. * Copyright (C) 2008-2015 VoltDB Inc.//from w w w . j ava 2 s . c om * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with VoltDB. If not, see <http://www.gnu.org/licenses/>. */ import java.io.IOException; import java.nio.ByteBuffer; import java.nio.channels.FileChannel; public class Main { public static void writeBuffer(FileChannel fc, ByteBuffer buf, int startPos) throws IOException { int pos = startPos; while (buf.hasRemaining()) { pos += fc.write(buf, pos); } } }