How to write the given byte into byte buffer.

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How to write the given byte into byte buffer.
Posted on: July 27, 2010 at 12:00 AM

In this tutorial you will see how to write the given byte into byte buffer.

How to write the given byte into byte buffer.

In this tutorial, we will see how to writes the byte into byte buffer by using
put(byte b) method of ByteBuffer class.

ByteBuffer API:

The java.nio.ByteBuffer class extends java.nio.Buffer class. It provides the following methods:

Return type	Method	Description
static ByteBuffer	allocate(int capacity)	The allocate(..)method allocate a new byte buffer.
abstract ByteBuffer	put(byte b)	The put(..) method write byte into associated buffer and increment position.
abstract byte	get()	The get() method read byte from current position and increment position.

code


import java.nio.*;

import java.nio.ByteBuffer;



public class PutByte {

  public static final int capacity = 9;

  public static void main(String[] args) {

    try {

      ByteBuffer byteBuf = ByteBuffer.allocate(capacity);

      for (int i = 0; i < 9; i++) {

        byteBuf.put((byte) ('1' + i));

      }

      byteBuf.rewind();

      System.out.print("\nContents of buffer :");

      while (byteBuf.hasRemaining()) {

        System.out.print((char) byteBuf.get());

      }

    } catch (Exception e) {

      System.out.println(e);

    }

  }

}

Output

C:\>java PutByte
Contents of buffer :123456789

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