//class Clock

public class Clock {

    private int hr;  //store hours
    private int min; //store minutes
    private int sec; //store seconds

    //Constructor with parameters, to set the time
    //The time is set according to the parameters
    //Postcondition: hr = hours; min = minutes; sec = seconds
    public Clock(int hours, int minutes, int seconds) {
        setTime(hours, minutes, seconds);
    }
    
    //Default constructor
    //Postcondition: hr = 0; min = 0; sec = 0
    public Clock() {
        setTime(0, 0, 0);
    }

    //Method to set the time
    //The time is set according to the parameters
    //Postconditions: hr = hours; min = minutes; sec = seconds
    public void setTime(int hours, int minutes, int seconds) {
        if(0<=hours && hours<24)
            hr = hours;
        else
            hr = 0;
	
        if(0 <= minutes && minutes < 60)
            min = minutes;
        else
            min = 0;
	
        if(0 <= seconds && seconds < 60)
            sec = seconds;
        else
            sec = 0;
    }

    //Method to return the hours
    //Postconditions: the value of hr is returned
    public int getHours() {
        return hr;
    }

    //Method to return the minutes
    //Postconditions: the value of min is returned
    public int getMinutes() {
        return min;
    }

    //Method to return the seconds
    //Postconditions: the value of sec is returned
    public int getSeconds() {
        return sec;
    }

    //Method to print the time
    //Postconditions: Time is printed in the form hh:mm:ss
    public void printTime() {
        if(hr < 10)
            System.out.print("0");
        System.out.print(hr + ":");

        if(min < 10)
            System.out.print("0");
        System.out.print(min + ":");

        if(sec < 10)
            System.out.print("0");
        System.out.print(sec);
    }

    //Method to increment the time by one second
    //Postconditions: The time is incremented by one second
    //If the before-increment time is 23:59:59, the time
    //is reset to 00:00:00
    public void incrementSeconds() {
        sec++;
        if(sec > 59) {
            sec = 0;
            incrementMinutes(); //increment minutes
        }
    }

    //Method to increment the time by one minute
    //Postconditions: The time is incremented by one minute
    //If the before-increment time is 23:59:53, the time
    //is reset to 00:00:53
    public void incrementMinutes() {
        min++;
        if(min > 59) {
            min = 0;
            incrementHours(); //increment hours
        }
    }

    //Method to increment the time by one hour
    //Postconditions: The time is incremented by one hour
    //If the before-increment time is 23:45:53, the time
    //is reset to 00:45:53
    public void incrementHours() {
        hr++;
        if(hr > 23)
            hr = 0;
    }

    //Method to compare the two times
    //Postconditions: Returns true if this time is equal to
    //                otherTime; otherwise returns false
    public boolean equals(Clock otherClock) {
        return(hr == otherClock.hr
	       && min == otherClock.min
	       && sec == otherClock.sec);
    }
    
    //Method to copy time
    //Postcondition: The data members of otherTime are copied
    //               into the correspoding data members of
    //               this time.
    //               hr = otherTime.hr; min = otherTime.min;
    //               sec = otherTime.sec;
    public void makeCopy(Clock otherClock) {
        hr = otherClock.hr;
        min = otherClock.min;
        sec = otherClock.sec;
    }

    //Method to return a copy of time
    //Postcondition: A copy of the object is created
    //               and a reference of the copy is returned
    public Clock getCopy() {
        Clock temp = new Clock();

        temp.hr = hr;
        temp.min = min;
        temp.sec = sec;

        return temp;
    }

    public String toString() {
        String str = "";
	
        if(hr < 10)
            str = "0";
        str = str + hr + ":";

        if(min < 10)
            str = str + "0" ;
        str = str + min + ":";

        if(sec < 10)
            str = str + "0";
        str = str + sec;

        return str;
    }
}