SumIt.java

package com.example.sum;
public class SumIt {

    // instance variables
    private double one, two, sum;

    // use the two parameters to set the values of your two instance variables
    public void setNums(double num1, double num2) {
        one = num1;
        two = num2;
    }

    // sum the two numbers here
    public void sum() {
        sum = one + two;
    }

    // print the sum here
    public void print() {
        System.out.println(sum);
    }


    public static void main(String[] args) {
        SumIt runner = new SumIt();

        // should print out 12
        runner.setNums(5,  7);
        runner.sum();
        runner.print();

        // should print out 40
        runner.setNums(13, 27);
        runner.sum();
        runner.print();
    }

}