ShortBuffer isDirect() Method in Java with Examples

The isDirect() method of java.nio.ShortBuffer is used to check whether or not this short buffer is direct.

Syntax:

public abstract boolean isDirect()

Return Value: The method returns true if and only if, this buffer is direct

Below programs illustrate the use of isDirect() method:

Program 1:

// Java program to demonstrate
// isDirect() method

import java.nio.*;
import java.util.*;

public class GFG {
    public static void main(String[] args)
    {

        short[] array = { 10000, 10640, 10189, -2000, -16780 };

        // creating short array
        ShortBuffer shortBuf1 = ShortBuffer.wrap(array);

        // checking if the array is Direct or not
        if (shortBuf1.isDirect()) {
            System.out.println("Short buffer is direct.");
        }
        else {
            System.out.println("Short buffer is not direct.");
        }
    }
}

Output:

Short buffer is not direct.

Program 2:

// Java program to demonstrate
// isDirect() method

import java.nio.*;
import java.util.*;

public class GFG {
    public static void main(String[] args)
    {

        ByteBuffer b = ByteBuffer.allocateDirect(512);

        ShortBuffer shortBuf = b.asShortBuffer();

        // checking if the array is Direct or not
        if (shortBuf.isDirect()) {
            System.out.println("Short buffer is direct.");
        }
        else {
            System.out.println("Short buffer is not direct.");
        }
    }
}

Output:

Short buffer is direct.

Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/ShortBuffer.html#isDirect–