How to create a long array with the help of long buffer.

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How to create a long array with the help of long buffer.
Posted on: August 5, 2010 at 12:00 AM

in this tutorial, you will see how to create a long array with the help of long buffer.

How to create a long array with the help of long buffer.

In this tutorial, we will see how to create a long array with the help of long buffer.

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.
long[]	array()	The array() method returns long array based on long buffer.
abstract long	get()	The get() method read long value from current position and increment position..

Code


import java.nio.*;

import java.nio.LongBuffer;



public class ArrayByBuffer {

  public static void main(String[] args){

	LongBuffer longBuf = LongBuffer.allocate(256);

    longBuf.put(345678);

    longBuf.put(8765433);

    longBuf.put(643564);

    longBuf.flip();

	System.out.println("Content in long buffer.");

    while (longBuf.hasRemaining()) {

      System.out.println(longBuf.get());

    }

    longBuf.flip();

    long[] arr = longBuf.array();

	System.out.println("Content in long array.");

	  for (int i = 0; i < longBuf.limit(); i++) {

      System.out.println((long) arr[i]);

    }

  }

}

Output

C:\>java ArrayByBuffer
Content in long buffer.
345678
8765433
643564
Content in long array.
345678
8765433
643564

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