School, 01.10.17, Time class

Time.java
---------

public class Time {
    int hours;
    int minutes;

    Time() {
        this.hours = 0;
        this.minutes = 0;
    }

    Time(int hours, int minutes) {
        setHours(hours);
        setMinutes(minutes);
    }

    void setHours(int hours) {
        if (hours >= 0 && hours <= 23) {
            this.hours = hours;
        }
    }

    void setMinutes(int minutes) {
        if (minutes >= 0 && minutes <= 59) {
            this.minutes = minutes;
        }
    }

    int getHours() {
        return this.hours;
    }

    int getMinutes() {
        return this.minutes;
    }

    void add(int minutes) {
        this.minutes = this.minutes + minutes;
        if (this.minutes >= 60) {
            this.hours += this.minutes / 60;
            this.minutes = this.minutes % 60;

            if (this.hours >= 24) {
                this.hours = this.hours % 24;
            }
        }
    }

    boolean isAfter(Time t) {
        if (this.hours > t.hours) {
            return true;
        } else if (this.hours < t.hours) {
            return false;
        } else if (this.minutes > t.minutes) {
            return true;
        } else {
            return false;
        }

    }

    boolean isBefore(Time t) {
        if (this.hours == t.hours) {
            return this.minutes < t.minutes;
        }
        return this.hours < t.hours;
    }

    public String toString() {
        String res = "";

        if (this.hours < 10)
            res = "0" + this.hours + ":";
        else
            res = this.hours + ":";

        if (this.minutes < 10)
            res += "0" + this.minutes;
        else
            res += this.minutes + "";

        return res;
    }
}

RunTume.java
------------
import java.util.Scanner;

public class RunTime {

    public static void main(String[] args) {
        Time t;

        t = new Time();
        System.out.println(t);

        t.setHours(8);
        t.setMinutes(25);
        System.out.println(t);

        t.setHours(120);
        t.setMinutes(151);
        System.out.println(t);

        System.out.println("-------------------");

        Time t1 = new Time(22, 12);
        System.out.println(t1);

        t1.add(23);
        System.out.println(t1);

        t1.add(23);
        System.out.println(t1);

        t1.add(24 * 60 * 3 + 10);
        System.out.println(t1);

        System.out.println("-------------------");
        Scanner in = new Scanner(System.in);

        System.out.println("enter time: ");
        int h = in.nextInt();
        int m = in.nextInt();
        Time start = new Time(h, m);

        System.out.println("enter minutes to add: ");
        int min = in.nextInt();

        start.add(min);
        System.out.println("The time will be " + start);

    }

}