Here you can find the source of writeFully(OutputStream out, ByteBuffer buf)
public static void writeFully(OutputStream out, ByteBuffer buf) throws IOException
//package com.java2s; /* JKTX/*from ww w. ja va2 s . c o m*/ * * Copyright (c) 2011 Timon Bijlsma * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public License * as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ import java.io.IOException; import java.io.OutputStream; import java.nio.ByteBuffer; public class Main { public static void writeFully(OutputStream out, ByteBuffer buf) throws IOException { buf.mark(); if (buf.hasArray()) { out.write(buf.array(), buf.arrayOffset() + buf.position(), buf.remaining()); } else { byte[] temp = new byte[Math.min(buf.remaining(), 8192)]; while (buf.hasRemaining()) { int w = Math.min(temp.length, buf.remaining()); buf.get(temp, 0, w); out.write(temp, 0, w); } } buf.reset(); } }