While Loop in Java


The while loop is Java's most fundamental loop statement. It repeats a statement or block while its controlling expression is true.The condition can be any Boolean expression.

The body of the loop will be executed as long as the conditional expression is true. When condition becomes false, control passes to the next line of code immediately following the loop.

  • If the condition to true, the code inside the while loop is executed.
  • The condition is evaluated again.
  • This process continues until the condition is false.
  • When the condition to false, the loop stops.

Syntax:
   while(Condition)
   {
       // body of loop;
       // Increment (or) Decrement;
   }

Source Code

import java.util.Scanner;
 
public class while_loop {
    public static void main(String args[])
    {
        System.out.println("Enter The Limit : ");
        Scanner in =new Scanner(System.in);
        int n=in.nextInt();
        int i=1;
        while(i<=n)
        {
            System.out.println(i);
            i++;
        }
    }
}
 

Output

Enter The Limit :
10
 
1
2
3
4
5
6
7
8
9
10
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Basic Programs