ByteBuffer isDirect() methods in Java with Examples Last Updated : 27 Jun, 2019 Comments Improve Suggest changes Like Article Like Report 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-- Create Quiz Comment R rohitprasad3 Follow 0 Improve R rohitprasad3 Follow 0 Improve Article Tags : Java Java-Functions Java-NIO package Java-ByteBuffer Explore Java BasicsIntroduction to Java3 min readJava Programming Basics9 min readJava Methods6 min readAccess Modifiers in Java4 min readArrays in Java7 min readJava Strings7 min readRegular Expressions in Java3 min readOOP & InterfacesClasses and Objects in Java5 min readAccess Modifiers in Java4 min readJava Constructors4 min readJava OOP(Object Oriented Programming) Concepts10 min readJava Packages2 min readJava Interface7 min readCollectionsCollections in Java12 min readCollections Class in Java13 min readCollection Interface in Java4 min readIterator in Java4 min readJava Comparator Interface5 min readException HandlingJava Exception Handling6 min readJava Try Catch Block4 min readJava final, finally and finalize4 min readChained Exceptions in Java3 min readNull Pointer Exception in Java5 min readException Handling with Method Overriding in Java4 min readJava AdvancedJava Multithreading Tutorial3 min readSynchronization in Java7 min readFile Handling in Java4 min readJava Method References7 min readJava 8 Stream Tutorial7 min readJava Networking6 min readJDBC Tutorial5 min readJava Memory Management3 min readGarbage Collection in Java6 min readMemory Leaks in Java3 min readPractice JavaJava Interview Questions and Answers1 min readJava Programs - Java Programming Examples7 min readJava Exercises - Basic to Advanced Java Practice Programs with Solutions5 min readJava Quiz1 min readJava Project Ideas For Beginners and Advanced15+ min read Like