Answer to Question #228198 in Java | JSP | JSF for Macwin

Question

Create a class called time that has separate int member data for hours, minutes and seconds. One constructor should initialize this data to 0, and another should initialize it to fixed values. Another member function should display it, in 11:59:59 format. The final member function should add two objects of type time passed as arguments.
A main () program should create two initialized time objects (should they be const?) and one that isn't initialized. Then it should add the two initialized values together, leaving the result in the third variable. Finally it should display the value of this variable. Make appropriate member functions const

Answer 1

Are you sure, it is for Java? It does not contain Const modifiers for functions.

Anyway, here is the solution, I think it will be simple to adapt to any other language.

Time.java:

public class Time {
    int hours;
    int minutes;
    int seconds;

    public Time() {
        hours = 0;
        minutes = 0;
        seconds = 0;
    }
    public Time(int h, int m, int s) {
        hours = h;
        minutes = m;
        seconds = s;
    }
    public String toString() {
        return String.format("%d:%02d:%02d", hours, minutes, seconds);
    }
    public void add(Time time1, Time time2) {
        hours = time1.hours + time2.hours;
        minutes = time1.minutes + time2.minutes;
        seconds = time1.seconds + time2.seconds;

        minutes += seconds / 60;
        seconds %= 60;
        hours += minutes / 60;
        minutes %= 60;
    }
}

Main.java:

public class Main {
    public static void main(String[] args) {
        final Time time1 = new Time(0, 0, 2);
        final Time time2 = new Time(11, 59, 59);
        final Time time3 = new Time();
        time3.add(time1, time2);
        System.out.println(time3.toString());
    }
}