Java File Write via ByteBuffer writeInt(WritableByteChannel channel, int val)

Description

write Int

License

Apache License

Declaration

public static long writeInt(WritableByteChannel channel, int val) throws IOException 

Method Source Code

//package com.java2s;
/*//ww  w. j  av a2  s  .  co  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.WritableByteChannel;

public class Main {
    public static long writeInt(WritableByteChannel channel, int val) throws IOException {
        ByteBuffer buf = ByteBuffer.allocate(4);
        buf.putInt(val);
        buf.rewind();
        return writeByteBuffer(channel, buf, 4);
    }

    /**
     * Writes bytes from buf to the channel until at least bytesToWrite number of bytes are written.
     *
     * @param channel the destination channel
     * @param buf     the source buffer
     * @param bytesToWrite       the number of bytes to write
     *
     * @return the number of bytes written
     *
     * @throws java.io.IOException
     */
    private static int writeByteBuffer(WritableByteChannel channel, ByteBuffer buf, int bytesToWrite)
            throws IOException {
        int t = bytesToWrite; // remaining bytes to write
        while (t > 0) {
            t -= channel.write(buf);
        }
        return bytesToWrite - t;
    }
}

Related

1. writeFileNIO(String txt, File fyl)
2. writeFloat(OutputStream os, float val, ByteOrder bo)
3. writeInt(OutputStream os, int val, ByteOrder bo)
4. writeInt(OutputStream out, ByteOrder order, int i)
5. writeInt(OutputStream out, int i)
6. writeInt(WritableByteChannel channel, int value)
7. writeInt(WritableByteChannel channel, int value)
8. writeLong(OutputStream in, long i)
9. writeLong(OutputStream os, Long d)