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Creates a read-only int buffer that shares the content of int buffer.
Posted on: August 3, 2010 at 12:00 AM
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In this tutorial you will see how to creates a read-only int buffer that shares the content of int buffer.

Creates a read-only int buffer that shares the content of int buffer.

In this tutorial, we will see how to creates a read-only int buffer that shares the content of int buffer.

IntBuffer API :

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

Return type Method Description
static IntBuffer allocate( int capacity)  The allocate(..) method allocate a new int buffer.
abstract IntBuffer asReadOnlyBuffer() The asReadOnlyBuffer() method create a new read-only buffer that share the content of given int buffer.

Code

import java.nio.*;
import java.nio.IntBuffer;

public class ReadOnlyIntBuffer {
  public static void main(String[] argsthrows Exception{
    int[] array=new int[]{4,5};
  IntBuffer intBuf = IntBuffer.wrap(array);  
    System.out.println("Content in int buffer.");
    while (intBuf.hasRemaining()) {
      System.out.println(intBuf.get());
    }
    IntBuffer readIntBuffer = intBuf.asReadOnlyBuffer();
    readIntBuffer.flip();
    System.out.println("Content in int readOnlyBuffer.");
    while (readIntBuffer.hasRemaining()) {
      System.out.println(readIntBuffer.get());
    }
    try {
      readIntBuffer.put(23);
    catch (Exception e) {
      System.out.println("Buffer is read_only : " + e);
    }
  }
}

Output

C:\>java ReadOnlyIntBuffer
Content in int buffer.
4
5
Content in int readOnlyBuffer.
4
5
Buffer is read_only : java.nio.ReadOnlyBufferException

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Posted on: August 3, 2010

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