yeah, the use of java.util.Scanner would make it much more succinct:

    import java.util.Scanner;
    
    public class Addup {
        public static void main(String args[]) {
            Scanner sc = new Scanner(System.in);
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            System.out.println(i1 + i2);
        }
    }