Java: Method Exercises 3

// File   : methods/exercises/MethodExercises3.java
// Purpose: What is the output?
// Author : Fred Swartz
// Date   : 3 May 2005

import javax.swing.*;

class MethodExercises3 {
    //======================================================== main
    public static void main(String[] args) {
        int n = 77;

        output("n = ", n);
        n = signum(7);
        output(n);
        output("Ans 3 =  ", doIt(2, 100));
        output("Ans 4 =  ", doIt(200, 200));
        output("Ans 5 =  ", doIt(100, 2));
    }

    //====================================================== output
    static void output(int i) {
        output("Result = ", i);
    }

    //====================================================== output
    static void output(String message, int i) {
        JOptionPane.showMessageDialog(null, message + i);
    }

    //====================================================== signum
    static int signum(int a) {
        int result;
        if (a < 0) {
            result = -1;
        } else if (a > 0) {
            result = 1;
        } else {
            result = 0;
        }
        return result;
    }

    //======================================================== doIt
    static int doIt(int x, int y) {
        int result;
        if (x < y) {
            return signum(y - x);
        } else {
            return Math.max(x, y);
        }
    }
}