ShortBuffer asReadOnlyBuffer() method in Java

Java 8Object Oriented ProgrammingProgramming

A read-only short buffer can be created using the contents of a buffer with the method asReadOnlyBuffer() in the class java.nio.ShortBuffer. The new buffer cannot have any modifications as it is a read-only buffer. However, the capacity, positions, limits etc. of the new buffer are the same as the previous buffer.

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 {
         ShortBuffer buffer = ShortBuffer.allocate(5);
         buffer.put((short)12);
         buffer.put((short)91);
         buffer.put((short)25);
         buffer.put((short)18);
         buffer.put((short)30);
         buffer.rewind();
         System.out.println("The Original ShortBuffer is: " + Arrays.toString(buffer.array()));
         ShortBuffer roBuffer = buffer.asReadOnlyBuffer();
         System.out.println("The ReadOnlyBuffer ShortBuffer is: ");
         while (roBuffer.hasRemaining())
         System.out.print(roBuffer.get() + " ");
      } catch (IllegalArgumentException e) {
         System.out.println("Error!!! IllegalArgumentException");
      } catch (ReadOnlyBufferException e) {
         System.out.println("Error!!! ReadOnlyBufferException");
      }
   }
}

The output of the above program is as follows −

Output

The Original ShortBuffer is: [12, 91, 25, 18, 30]
The ReadOnlyBuffer ShortBuffer is:
12 91 25 18 30
raja
Published on 01-Mar-2019 07:18:44
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