Simple if statement

The simple if statement tells the program to execute a set of statements only if a particular condition evaluates to true.

Syntax

if (<condition>) {
    //code to be executed
}

Example

In this program first, we are taking the users age, and then checking if the user is eligible to vote or not. If users age is greater than or equal to 18 then simply print “Eligible to vote”.

SimpleIfExample.javaCopy
import java.util.Scanner;

public class SimpleIfExample {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        
        System.out.println("Enter your age : ");
        int age = scanner.nextInt();
        
        // Simple if statement
        if (age >= 18) {
            System.out.println("Eligible to vote");
        }
        
    }
}
Try It

Flow diagram

Flow-diagram of the above example program –