Use of isDirect() method of intBuffer class in java.

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Use of isDirect() method of intBuffer class in java.
Posted on: August 4, 2010 at 12:00 AM

In this tutorial you will see the use of isDirect() method of intBuffer class in java.

Use of isDirect() method of intBuffer class in java.

In this tutorial, we will check int buffer is direct or not.

IntBuffer API.

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

Return type	Method	Description
abstract boolean	isDirect()	The isDirect() method tells whether this associated buffer is direct or not.
static IntBuffer	wrap(int[] array)	The wrap(...) method create a int buffer by wrapping the associated int array.

Code


import java.nio.*;

import java.nio.ByteBuffer;

import java.nio.IntBuffer;

	

public class IntIsDirect {

  public static void main(String[] argv){

	ByteBuffer b = ByteBuffer.allocateDirect(512);

	    IntBuffer i = b.asIntBuffer();

    if (i.isDirect()) {

   System.out.println("int buffer is direct.");

    } else {

	System.out.println("int buffer is not direct.");

    }

    int[] array = new int[] {1,2,3,4,5};

    IntBuffer intBuf = IntBuffer.wrap(array);

    if (intBuf.isDirect()) {

   System.out.println("int buffer is direct.");

    } else {

	System.out.println("int buffer is not direct.");

    }

  }

}

Output

C:\>java IntIsDirect
int buffer is direct.
int buffer is not direct.

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