For Loop in Java


The for loop in Java is an entry-controlled loop. A for loop is a repetition control structure which allows us to write a loop that is executed a specific number of times. The three components of the for loop (separated by ;) are variable declaration/initialization (here int i = 0), the condition (here i < 100), and the increment statement (here i++).

The variable declaration is done once as if placed just inside the { on the first run. Then the condition is checked, if it is true the body of the loop will execute, if it is false the loop will stop. Assuming the loop continues, the body will execute and finally when the } is reached the increment statement will execute just before the condition is checked again.

The curly braces are optional (you can one line with a semicolon) if the loop contains just one statement. But, it's always recommended to use braces to avoid misunderstandings and bugs. The for loop components are optional. If your business logic contains one of these parts, you can omit the corresponding component from your for loop.

Syntax:
   for( initial ; condition ; increment / decrement)
   {
        // body of loop;
   }

Source Code

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

Output

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