ByteBuffer duplicate() method in Java

A duplicate buffer of a buffer can be created using the method duplicate() in the class java.nio.ByteBuffer. This duplicate buffer is identical to the original buffer. The method duplicate() returns the duplicate buffer that was created.

A program that demonstrates this is given as follows −

Example

 Live Demo

import java.nio.*;
import java.util.*;
public class Demo {
   public static void main(String[] args) {
      int n = 5;
      try {
         ByteBuffer buffer1 = ByteBuffer.allocate(5);
         buffer1.put((byte)1);
         buffer1.put((byte)2);
         buffer1.put((byte)3);
         buffer1.put((byte)4);
         buffer1.put((byte)5);
         buffer1.rewind();
         System.out.println("The Original ByteBuffer is: " + Arrays.toString(buffer1.array()));
         ByteBuffer buffer2 = buffer1.duplicate();
         System.out.print("The Duplicate ByteBuffer is: " + Arrays.toString(buffer2.array()));
      } catch (IllegalArgumentException e) {
         System.out.println("Error!!! IllegalArgumentException");
      } catch (ReadOnlyBufferException e) {
         System.out.println("Error!!! ReadOnlyBufferException");
      }
   }
}

Output

The Original ByteBuffer is: [1, 2, 3, 4, 5]
The Duplicate ByteBuffer is: [1, 2, 3, 4, 5]

Karthikeya Boyini

Published on 04-Mar-2019 07:44:32

• Related Questions & Answers
• ByteBuffer arrayOffset() method in Java
• ByteBuffer equals() method in Java
• ByteBuffer asShortBuffer() method in Java
• ByteBuffer compact() method in Java
• ByteBuffer get() method in Java
• ByteBuffer compareTo() method in Java
• ByteBuffer asLongBuffer() method in Java
• ByteBuffer asReadOnlyBuffer() method in Java
• ByteBuffer asDoubleBuffer() method in Java
• ByteBuffer allocateDirect() method in Java
• ByteBuffer asCharBuffer() method in Java
• ByteBuffer array() method in Java
• ByteBuffer allocate() method in Java
• ByteBuffer asFloatBuffer() method in Java
• ByteBuffer asIntBuffer() method in Java