import java.util.Scanner;

public class Sum{

public static void main(String tev[]){

Scanner input = new Scanner (System.in);

Integer num1;

Integer num2;

Integer resul = 0;

System.out.println("enter a number");
num1 = input.nextInt();


System.out.println("enter a number");
num2 = input.nextInt();

resul = (num1 + num2);

System.out.printf("%d + %d = %d",num1,num2,resul);


}
}

System.out.println("enter a number");
...
System.out.println("enter a number");
...
System.out.printf("%d + %d = %d",num1,num2,resul);

you asked to output only single number without any other text, including input prompt. Like this

System.out.println(resul);

Testing system can't read your "enter a number"! It not so clever ;)

Edited by author 14.05.2011 15:40