ByteBuffer isDirect() methods in Java with Examples

Last Updated : 27 Jun, 2019

The isDirect() method of java.nio.ByteBuffer Class is used to tell whether or not this byte buffer is direct.

Syntax:

public abstract boolean isDirect()

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

Below are the examples to illustrate the isDirect() method:

Examples 1:

// Java program to demonstrate 
// isDirect() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
        // defining and allocating ByteBuffer 
        // using allocate() method 
        ByteBuffer byteBuffer 
            = ByteBuffer.allocateDirect(4); 
  
        // check the byteBuffer 
        // using isDirect() method 
        boolean val = byteBuffer.isDirect(); 
  
        // checking the condition 
        if (val) 
            System.out.println("buffer is direct"); 
        else
            System.out.println("buffer is not direct"); 
    } 
} 

Output:

buffer is direct

Examples 2:

// Java program to demonstrate 
// isDirect() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
        // defining and allocating ByteBuffer 
        // using allocate() method 
        ByteBuffer byteBuffer = ByteBuffer.allocate(4); 
  
        // check the byteBuffer 
        // using isDirect() method 
        boolean val = byteBuffer.isDirect(); 
  
        // checking the condition 
        if (val) 
            System.out.println("buffer is direct"); 
        else
            System.out.println("buffer is not direct"); 
    } 
} 