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

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