How to make a class called time on java with these data informaton:

Question

■Class Time■

-second:int = 0 ----> hour:[o, 23]

--minute:int = 0 ----> minute: [o, 59]

-hour: int=0 -----> second: [e, 59]

Methods:-

+Time()

+Time (second: int, minute: int, hour: int)

+getHour): int

+getMinute() : int

+getSecond () : int

+setHour(hour: int): void

+setMinute (minute: int) : void

+setSecond (second: int) : void

+toString(): String-->"hh: mm: ss" with leading zero

+setTime (second: int, minute:int, hour: int) : void

+nextSecond (): Time -->increase by one second,and return this instance

****

A class called Time, which models a time instance with hour, minute and second, is designed as shown

in the class diagram. It contains the following members:-

1- 3 private instance variables hour, minute, and second.

2- Constructors, getters and setters.

3- A method setTime () to set hour, minute and second.

A toString() that returns "hh:mm: ss" with leading zero if applicable.

4- A method nextSecond () that advances this instance by one second. It returns this instance too

support chaining (cascading) operations, e.g, t1.nextSecond (). nextSecond (). Take note that

the nextSecond() of 23:59:59 is 00:00:00.

Write the Time class and a test driver to test all the public methods. No input validations are required.

Answer 1

class TTime

{

private int second;

private int hour;

private int minute;

// time values are assumed valid

public TTime ( int h, int m, int s)

{

hour = h; minute=m; second=s;

}

public int GetHour() { return(hour); }

public int GetMinute() { return(minute); }

public int GetSecond() { return(second); }

public void SetHour( int h) { hour=h; }

public void SetMinute( int m) { minute = m; }

public void SetSecond( int s) { second=s; }

public String toString()

{

String outbuff="0";

if (hour<10)

{

outbuff = outbuff+hour;

}

else

{

outbuff = ""+hour;

}

outbuff = outbuff + ":";

if (minute<10)

{

outbuff = outbuff + "0" + minute;

}

else

{

outbuff = outbuff + minute;

}

outbuff = outbuff + ":";

if (second<10)

{

outbuff = outbuff + "0" + second;

}

else

{

outbuff = outbuff + second;

}

return(outbuff);

}

public void SetTime ( int h, int m, int s)

{

hour=h; minute=m; second=s;

}

public TTime( TTime t) //copy constructor

{

this.second = t.GetSecond();

this.minute = t.GetMinute();

this.hour = t.GetHour();

}

public TTime nextSecond()

{

second++;

if (second==60)

{

minute++;

second=0;

}

if (minute==60)

{

hour++;

minute=0;

}

if (hour==24)

{

//increases the day

hour=0;

}

return(this);

}

public static void main(String args[])

{

TTime t = new TTime(0,0,0);

do

{

System.out.println( t.toString());

TTime T = t.nextSecond();

t = T;

}

while (!((t.GetHour()==0) && (t.GetMinute()==0) && (t.GetSecond()==0)));

}

}