while loop in Java

It is used to execute a set of statements repeatedly as long as the condition is true. This loop checks the condition before executing the statement inside while loop.

Syntax

while(condition)
{
	//code to be executed
}

Flowchart of while loop

Example of while loop

public class Example
{
	public static void main(String args[])
	{
		int i = 1
		while(i<=10)
		{
			System.out.println(2*i);
			i++;	
		}
	}
}

Output

2
4
6
8
10
12
14
16
18
20

Infinite while loop in Java

By passing true in while loop you will get infinite while loop.

Syntax

while(true)
{
	//code to executed
}

Example

public class Example
{
	public static void main(String args[])
	{
		while(true)
		{
			System.out.println("This is infinite while loop.");
		}
	}
}

Output

This is infinite while loop.
This is infinite while loop.
This is infinite while loop.
This is infinite while loop.
ctrl+c

Press ctrl+c to exit infinite while loop.