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[] args) throws 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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