// Tutorial //

Java do while loop

Published on August 3, 2022
Default avatar
By Pankaj
Developer and author at DigitalOcean.
Java do while loop

While we believe that this content benefits our community, we have not yet thoroughly reviewed it. If you have any suggestions for improvements, please let us know by clicking the “report an issue“ button at the bottom of the tutorial.

Java do-while loop is used to execute a block of statements continuously until the given condition is true. The do-while loop in Java is similar to while loop except that the condition is checked after the statements are executed, so do while loop guarantees the loop execution at least once.

Java do while loop

Java do while loop syntax is as follows:

do {
     // statements
} while (expression);

The expression for the do-while loop must return a boolean value, otherwise, it will throw compile-time error.

do while java flow diagram

Java Do While Loop

Java do-while loop example

Here is a simple java do-while loop example to print numbers from 5 to 10.

package com.journaldev.javadowhileloop;

public class JavaDoWhileLoop {

	public static void main(String[] args) {

		int i = 5;
		do {
		} while (i <= 10);

java do while loop example

do while true java

We can create an infinite loop by passing boolean expression as true in the do while loop. Here is a simple do while java infinite loop example.

package com.journaldev.javadowhileloop;

public class DoWhileTrueJava {

	public static void main(String[] args) throws InterruptedException {
		do {
			System.out.println("Start Processing inside do while loop");
			// look for a file at specific directory
			// if found, then process it, such as inserting rows into database
			System.out.println("End Processing of do while loop");

			Thread.sleep(5 * 1000);
		} while (true);

Note that you will have to manually quit the application to stop it, using Ctrl+C if the program is executed in the terminal. If you execute the program in Eclipse IDE then there is a red color button to terminate the program.

do while vs while loop

The only time you should use a do-while loop is when you want to execute the statements inside the loop at least once, even though condition expression returns false. Otherwise, it’s always better to use a while loop. Java while loop looks cleaner than a do-while loop. That’s all for java do while loop. You should also look into java for loop and java continue statement. Reference: Oracle Documentation

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in our Questions & Answers section, find tutorials and tools that will help you grow as a developer and scale your project or business, and subscribe to topics of interest.

Sign up
About the authors
Default avatar


Developer and author at DigitalOcean.

Still looking for an answer?

Was this helpful?

import java.util.*; public class accepting { public static void main(String[] args) { //accept System.out.println (“Programe to accept your name”); Scanner sc = new Scanner(System.in); System.out.print("Enter Fullname : "); String fullname = sc.nextLine(); System.out.print("Enter Lastname : "); String lastname = sc.nextLine(); System.out.print("Enter Nickname : "); String nickname = sc.nextLine(); System.out.print(“Enter Student ID : “); String id = sc.nextLine(); //output System.out.println (”\n” + fullname + " " + lastname + " " + nickname + " " + id); } }


    The image still displays the wrong arrow…

    - Roman

      please give syntax for do while loop

      - rupesh

        hi Pankaj, Can you please correct the “if condition is true arrow” in the image?

        - Nikhil