Here you can find the source of readFully(final ReadableByteChannel channel, final ByteBuffer buf)
public static void readFully(final ReadableByteChannel channel, final ByteBuffer buf) throws IOException
//package com.java2s; /*/*from w w w . ja va 2s .c o m*/ * Copyright 2012 Sebastian Annies, Hamburg * * 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.io.EOFException; import java.io.IOException; import java.nio.ByteBuffer; import java.nio.channels.ReadableByteChannel; public class Main { public static void readFully(final ReadableByteChannel channel, final ByteBuffer buf) throws IOException { readFully(channel, buf, buf.remaining()); } public static int readFully(final ReadableByteChannel channel, final ByteBuffer buf, final int length) throws IOException { int n, count = 0; while (-1 != (n = channel.read(buf))) { count += n; if (count == length) { break; } } if (n == -1) { throw new EOFException("End of file. No more boxes."); } return count; } }