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 
// 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 
// 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");
    }
}
Output: 
buffer is not direct
Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/ByteBuffer.html#isDirect--
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