public class AddTwoNumbers { public static void main(String[] args) { int num1 = 5, num2 = 15, sum; sum = num1 + num2; System.out.println("Sum of these numbers: "+sum); } } code example

Example: java sum of two numbers program intellij

import java.util.Scanner;
public class AddTwoNumbers2 {

    public static void main(String[] args) {
        
        int num1, num2, sum;
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter First Number: ");
        num1 = sc.nextInt();
        
        System.out.println("Enter Second Number: ");
        num2 = sc.nextInt();
        
        sc.close();
        sum = num1 + num2;
        System.out.println("Sum of these numbers: "+sum);
    }
}

Output: