Check long buffer is read

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Check long buffer is read_only or not.
Posted on: August 6, 2010 at 12:00 AM

In this tutorial, you will see how to check long buffer is read_only or not.

Check long buffer is read_only or not.

In this tutorial, you will see how to check long buffer is read_only or not.

LongBuffer API:

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

Return type	Method	Description
static LongBuffer	allocate( int capacity)	The allocate(..) method allocate a long buffer of given capacity.

Buffer API:

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

Return type	Method	Description
abstract boolean	isReadOnly()	The isReadOnly() method tells this buffer is read only or not.

Code


import java.nio.*;

import java.nio.LongBuffer;



public class IsReadOnlyDemo {

  public static void main(String[] args) {

  LongBuffer longBuf = LongBuffer.allocate(256);

    if (longBuf.isReadOnly()) {

   System.out.println("Buffer is read only.");

    } else {

 System.out.println("Buffer is not read only.");

    }

LongBuffer longBuf1 = longBuf.asReadOnlyBuffer();

    if (longBuf1.isReadOnly()) {

      System.out.println("Buffer is read only.");

    } else {

System.out.println("Buffer is not read only.");

    }

  }

}

Output

C:\>java IsReadOnlyDemo
Buffer is not read only.
Buffer is read only.

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