Plz help me to solve

Question

1. Write a program using java to create :
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:
 3 private instance variables hour, minute, and second.
 Constructors, getters and setters.
 A method setTime() to set hour, minute and second.
 A toString() that returns "hh:mm:ss" with leading zero if applicable.
 A method nextSecond() that advances this instance by one second. It returns this
instance to 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

@java4ever_tutorials
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Answer 2

1. Write a program using java to create :
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:
 3 private instance variables hour, minute, and second.
 Constructors, getters and setters.
 A method setTime() to set hour, minute and second.
 A toString() that returns "hh:mm:ss" with leading zero if applicable.
 A method nextSecond() that advances this instance by one second. It returns this
instance to 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 3

Hi, in the first i don't understand what u want but i write this programe for u ,, i think the answer is :

For (int h=1;h<=23;h++)
For (int m=0;m<=59;m++)
For (int s=0;s<=59;s++)
System.out.println (h+":"+m+":"+s);
}

Answer 4

Show me what you already tried and I'll make the rest for you. No slackers.

Answer 5

public class Time {

private int hour, minute, second;

Time () { hour = 0; minute = 0; second = 0; }
Time (int hour, int minute, int second) { this.hour = hour; this.minute = minute; this.second = second; }

public int get_hour() { return hour; }
public int get_minute() { return minute; }
public int get_second() { return second; }

public void set_hour(int hour) { this.hour = hour; }
public void set_minute(int minute) { this.minute = minute; }
public void set_second(int second) { this.second = second; }

public void set_time (int hour, int minute, int second) { this.hour = hour; this.minute = minute; this.second = second; }

public String to_string() {

StringBuffer time = new StringBuffer();

if(hour < 10) time.append('0');
time.append(hour);

time.append(':');

if(minute < 10) time.append('0');
time.append(minute);

time.append(':');

if(second < 10) time.append('0');
time.append(second);

return time.toString();
}

public Time next_second() {

if (second == 59) {
if (minute == 59) {
if(hour == 23) {
hour = 0;
minute = 0;
second = 0;
}
else {
++hour;
minute = 0;
second = 0;
}
}
else {
++minute;
second = 0;
}
}
else
++second;

return this;
}
}

There, had nothing better to do, although your teacher might notice that the code is professionally done.

Answer 6

The answer should be like this

03:02:01
00:00:00
04:05:06

Hour is: 4
Minute is: 5
Second is: 6
23:59:58
23:59:59
00:00:02