Write a java program. Write a Clock class according to the following specificati

Question

Write a java program.

Write a Clock class according to the following specifications:

Fields: private int seconds; private int minutes; private int hours;

Constructors: public Clock(int s, int m, int h) Initializes the instance variables seconds, minutes, and hours to the parameters s, m, and h, respectively.

public Clock(Clock r)

Copy constructor

Instance methods:

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

Sets the instance variables seconds, minutes, and hours to the parameters s, m, and h, respectively.

public void tick()

Adds 1 to seconds. seconds wraps around at 60 seconds to 0, in which case tick adds 1 to minutes. minutes similarly wraps around at 60 minutes to 0, in which case tick adds 1 to hours. hours similarly wraps around at 24 hours to 0.

public String toString()

returns a string containing the values of seconds, minutes, and hours in the follow- ing format: seconds = ___ minutes = ___ hours = ___

private void incrementMinutes()

Adds 1 to minutes. minutes and hours wrap around at 60 and 24, respectively.

private void incrementHours()

Add 1 to hours. hours wraps around at 24 hours to 0.

Use named constants to hold the wrap-around values for seconds, minutes, and hours (60, 60, and 24). Write a test program that constructs a Clock object, sets sec- onds, minutes, and hours to 58, 59, and 23, respectively. Then call tick four times. Display the time after each call of tick. Then create a copy with the copy constructor. Display the time in the new clock.

Can you send me a screenshot out the output.

Explanation / Answer

//Class Clock defined
class Clock
{
   //Private data member
   private int seconds;
   private int minutes;
   private int hours;
   //Parameterized Constructor
   public Clock(int s, int m, int h)
   {
       seconds = s;
       minutes = m;
       hours = h;
   }
   //Copy constructor
   public Clock(Clock r)
   {
       seconds = r.seconds;
   minutes = r.minutes;
       hours = r.hours;
   }
   //Set Time method
   public void setTime(int s, int m, int h)
   {
       seconds = s;
       minutes = m;
       hours = h;
   }
   //Tick method
   public void tick()
   {
       //Checks for the second if 60 set the second to 0 and increment minute
       if(seconds == 60)
       {
           seconds = 0;
           incrementMinutes();
       }
       else
           seconds++;
       //After increment the minute if it is 60 then set the minute to 60 and increment the hour
       if(minutes == 60)
       {
           minutes = 0;
           incrementHours();
       }
       //if after increment of hour it is 24 then set it to 0
       if(hours == 24)
       {
           hours = 0;
       }
   }
   //Returns the String as per the format
   public String toString()
   {
       String ss = "";
       ss += "Seconds = " + String.valueOf(seconds) + " Minutes = " + String.valueOf(minutes) + " Hours = " + String.valueOf(hours);
       return ss;
   }
   //Increment minute method
   private void incrementMinutes()
   {
       //If minute is 60 set the minute to 0 and increment the hour
       if(minutes == 60)
       {
           minutes = 0;
           incrementHours();
       }
       else
           minutes++;
       //If after incrementing the hour it is 24 then set it to 0
       if(hours == 24)
       {
           hours = 0;
       }
   }
   //Increment the hour
   private void incrementHours()
   {
       //If the hour is 24 then set it to 0
       if(hours == 24)
       {
           hours = 0;
       }
       else
           hours++;
   }
}
//Driver class
public class ClockDemo
{
   public static void main(String ss[])
   {
       //Creates an object of Clock class with parameterized constructor
       Clock cc = new Clock(58, 59, 23);
       //Displays the initial clock value
       System.out.println("Initial Clock: " + cc.toString());
       //Calls the Tick method 4 times and displays the clock value
       for(int c = 1; c <= 4; c++)
       {
           cc.tick();
           System.out.println(c + " : " + cc.toString());
       }
       //Creates an object of Clock class with copy constructor
       Clock cc1 = new Clock(cc);
       System.out.println("After Using Copy Constructor: " + cc1.toString());
   }
}

Oputput:

Initial Clock: Seconds = 58 Minutes = 59 Hours = 23
1 : Seconds = 59 Minutes = 59 Hours = 23
2 : Seconds = 60 Minutes = 59 Hours = 23
3 : Seconds = 0 Minutes = 0 Hours = 0
4 : Seconds = 1 Minutes = 0 Hours = 0
After Using Copy Constructor: Seconds = 1 Minutes = 0 Hours = 0

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