Question

Must be written in Java:

After completing this lab, you should be able to:

1. Write a Java class to represent Time.

2. Create default and parameterized constructors.

3. Create accessor and mutator methods.

4. Write a toString method.

This project will represent time in hours, minutes, and seconds.

Part 1:

5. Create a new Java class named Time that has the following instance fields in the parameterized constructor:

   1. hours

   2. minutes

   3. seconds

6. Create a default constructor that sets the time to that would represent the following time: 12:00:00.

Part 2:

1. Create getter methods.

   1. getHours() : returns the current hours of Time

   2. getMinutes() : returns the current minutes of Time

   3. getSeconds() : returns the current seconds of Time.

2. Create setter methods. Do they return anything?:

   1. setHours() : method allows user to change the hours of Time

      1. Should have 1 input parameter.

   2. setMinutes() : method allows user to change the minutes of Time

      1. Should have 1 input parameter.

   3. setSeconds() : method allows user to change the seconds of Time

      1. Should have 1 input parameter.

   4. setTime() method with 3 parameters -- to change the hours, minutes, and seconds of Time.

DON’T FORGET TO JAVADOC

Part 3:

1. In your TimeTester class you should have a main method that uses your Time class.

   1. Create 2 Time objects;

      1. One object that will use the default constructor.

      2. One that uses the parameterized constructor.

   2. Print the just hours of both Time objects.

   3. Print the just minutes of both Time objects.

   4. Print the just seconds of both Time objects.

   5. Change the parameterized Time object.

      1. Using setTime() method, change to 12:34:56.

   6. Change the default Time object.

      1. Hours to 4 using setHours().

      2. Minutes to 2 using setMinutes().

      3. Seconds to 3 using setSeconds().

   7. Print both Time objects. What do you notice?

2. In Time Class

   1. Create a toString() method that, when called, returns the state of the Time object in the format hh:mm:ss i.e. 12:23:33.

3. In your timeTester class

   1. Print both Times objects. What do you notice?

Don’t forget to check for errors! Make sure to ask questions if you have any.

Compile/build your code, there should be no errors.

Run your code because you just created your main/tester class.

Answer 1

Please find the answer below.
Please do comments in case of any issue. Also, don't forget to rate the question. Thank You So Much.

Time.java

package c15;

public class Time {
   private int hours;
   private int minutes;
   private int seconds;
   Time(){
       seconds=0;
       minutes=0;
       hours=12;
   }

   public Time(int hours, int minutes, int seconds) {
       super();
       this.hours = hours;
       this.minutes = minutes;
       this.seconds = seconds;
   }

   public void setTime(int hours, int minutes, int seconds) {
       this.hours = hours;
       this.minutes = minutes;
       this.seconds = seconds;
   }

   public int getHours() {
       return hours;
   }
   public void setHours(int hours) {
       this.hours = hours;
   }
   public int getMinutes() {
       return minutes;
   }
   public void setMinutes(int minutes) {
       this.minutes = minutes;
   }
   public int getSeconds() {
       return seconds;
   }
   public void setSeconds(int seconds) {
       this.seconds = seconds;
   }

   @Override
   public String toString() {
       return String.format("Time[%02d:%02d:%02d]", hours,minutes,seconds);
   }

   public static void main(String[] args) {
       Time defaultTime = new Time();
       System.out.println(defaultTime);

       Time valTime = new Time(12,34,30);
       System.out.println(valTime);

       System.out.println("Hour of first object : "+defaultTime.getHours());
       System.out.println("Hour of second object : "+valTime.getHours());

       System.out.println("Minutes of first object : "+defaultTime.getMinutes());
       System.out.println("Minutes of second object : "+valTime.getMinutes());

       System.out.println("Seconds of first object : "+defaultTime.getSeconds());
       System.out.println("Seconds of second object : "+valTime.getSeconds());

       valTime.setTime(12, 34, 56);
       System.out.println(valTime);

       defaultTime.setHours(4);
       defaultTime.setMinutes(2);
       defaultTime.setSeconds(3);
       System.out.println(defaultTime);
   }
}

output