Checkboxes

Main.java

package com.company;

import java.util.Scanner;


//Uncomment the class definition.
/**
class Checkbox {
    private boolean isChecked = false;

    public boolean isChecked() {
        return isChecked;
    }

    public void unCheck(){
        isChecked = false;
    }

    public void check(){
        isChecked = true;
    }
}**/


public class Main {

    public static void main(String[] args) {
        boolean checkC1 = false;
        boolean checkC2 = false;

        //Creates two Checkbox objects
        Checkbox c1 = new Checkbox();
        Checkbox c2 = new Checkbox();

        //Reads in command line arguments specifying whether or not the boxes should be checked.
        if (args.length == 2) {
            checkC1 = Boolean.parseBoolean(args[0]);
            checkC2 = Boolean.parseBoolean(args[1]);
        } else {
            System.err.println("Usage: java Main " +
                    "<c1 true or false> <c2 true or false>");
            System.err.println("Ensure the Checkbox class definition is not commented out.");
            System.exit(1);
        }

        if (checkC1) {
            c1.check();
        }

        if (checkC2) {
            c2.check();
        }

        Scanner reader = new Scanner(System.in); //Reads input from keyboard

        //covers case in which both boxes are checked;
        //the user will need to deselect a box in order to move forward
        while(c1.isChecked() && c2.isChecked()){
            System.out.println("Selecting both boxes is not permitted. \nPlease deselect box 1 or box 2 (Enter 1 or 2): ");
            int n = reader.nextInt();
            if (n == 1) {
                c1.unCheck();
            } else if (n == 2){
                c2.unCheck();
            }
        }


        if (c1.isChecked()) {
            performAction(1);
        }

        if (c2.isChecked()) {
            performAction(2);
        }

        if (!c1.isChecked() && !c2.isChecked()) {
            System.out.println("No boxes have been checked.");
        }

    }

    public static void performAction(int n){
        System.out.printf("c%d is checked", n);
        System.out.println("perform action");
    }
}