Here you can find the source of writeFully(@Nonnull final FileChannel dst, @Nonnull final ByteBuffer src, @Nonnegative final long position)
public static int writeFully(@Nonnull final FileChannel dst, @Nonnull final ByteBuffer src, @Nonnegative final long position) throws IOException
//package com.java2s; /*//from www.j a v a2s .c o m * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.io.IOException; import java.nio.ByteBuffer; import java.nio.channels.FileChannel; import javax.annotation.Nonnegative; import javax.annotation.Nonnull; public class Main { public static int writeFully(@Nonnull final FileChannel dst, @Nonnull final ByteBuffer src, @Nonnegative final long position) throws IOException { int count = 0; while (src.remaining() > 0) { count += dst.write(src, position + src.position()); } return count; } public static int writeFully(@Nonnull final FileChannel dst, @Nonnull final ByteBuffer src) throws IOException { int count = 0; while (src.remaining() > 0) { count += dst.write(src); } return count; } }