Java Loops

Java Loops

Java Looping statements are used to repeat a set of actions in a loop based on a condition.

There are many loop statements in Java. The following tutorials cover these looping statements in detail.

• Java – While Loop
• Java – Do-while Loop
• Java – For Loop
• Java – ForEach

Loop Control Statements

Java also provides some statements to control a loop. The following tutorials cover these loop control statements.

• Java – Break
• Java – Continue

Special Cases

The following are some of the special scenarios that involve a looping statement.

• Java – Infinite While Loop
• Java – Infinite For Loop

Loops Examples

Now, we shall cover some examples to demonstrate the usage of loops in Java.

While Loop

In the following program, we will use while loop to print “hello world” to console output in a loop.

Example.java

public class Example {

	public static void main(String[] args) {
		int i = 0;
		while(i < 3){
			System.out.println("hello world");
			i++;
		}
	}
}

Output

hello world
hello world
hello world

Do-while Loop

In the following program, we write a do-while loop statement to print “hello world” to console three times.

Example.java

public class Example {
	public static void main(String[] args) {
		int i = 0;
		do{
			System.out.println("hello world");
			i++;
		} while(i < 3);
	}
}

Output

hello world
hello world
hello world

For Loop

In the following program, we will use for loop and print a string three times to console output.

Example.java

public class Example {
	public static void main(String[] args) {
		for(int i = 0; i < 3; i++){
			System.out.println("hello world");
		}
	}
}

Output

hello world
hello world
hello world

Conclusion

In this Java Tutorial, we have learnt different looping statements available in Java, some special statements that control loops, and example use cases that use loops.