Why doesn\'t the following code compile for this assignment??? Clock Class: //Cl

ID: 3672856 • Letter: W

Question

Why doesn't the following code compile for this assignment???

Clock Class:

//Clock class that sets the start time and stop time
//and elapsed time between two times
//Clock.java
import java.sql.Time;
public class Clock
{

   //Create two instance of Time class with default values
   //for hour,minute and seconds
   private Time startTime=new Time(0, 0, 0);
   private Time stopTime=new Time(0, 0, 0);

   //set start time
   public void start(Time startTime)
   {
       this.startTime=startTime;
   }


   //set end time
   public void stop(Time stopTime)
   {
       this.stopTime=stopTime;
   }



   /**The method getElapsedTime calculates the time difference
   * between two times and returns seconds as return value.
   * */
   public int getElapsedTime()
   {
       int totalSeconds=0;
       int hours=stopTime.getHours()-startTime.getHours();
       if(hours>0)
       {
           int minues=stopTime.getMinutes()-startTime.getMinutes();
           if(minues>0)
           {
               minues=stopTime.getMinutes()-startTime.getMinutes();
           }
           else
               minues=startTime.getMinutes()-stopTime.getHours();

           int seconds=stopTime.getSeconds()-startTime.getSeconds();
           if(minues>0)
           {
               seconds=stopTime.getSeconds()-startTime.getSeconds();
           }
           else
               seconds=startTime.getSeconds()-stopTime.getSeconds();


           totalSeconds=hours*60*60+minues*60+seconds;
       }
       else
       {

           int minutes=stopTime.getMinutes()-startTime.getMinutes();
           if(minutes>0)
           {
               minutes=stopTime.getMinutes()-startTime.getMinutes();
           }
           else
               minutes=startTime.getMinutes()-stopTime.getMinutes();

           int seconds=stopTime.getSeconds()-startTime.getSeconds();
           if(seconds>0)
           {
               seconds=stopTime.getSeconds()-startTime.getSeconds();
           }
           else
               seconds=startTime.getSeconds()-stopTime.getSeconds();


           totalSeconds=hours*60*60+minutes*60+seconds;
       }
       //return seconds
       return totalSeconds;
   }//end of the getElapsedTime method


}//end of the class Clock

------------------------------------------------------------------------ /**
* Java class to test the Clock class
* to get elapsed time by passsing two arguments at run time
* and print the elapsed time in seconds
* */
import java.sql.Time;
public class TestClock
{
   public static void main(String[] args)
   {


       //Create an instance of Clock class object
       Clock clock=new Clock();
       //Get first argument
       String startTime=args[0];

       //split the argument and get hour,minute and second
       String [] time=startTime.split(":");

       //split the argument and get hour,minute and second
       int hour=Integer.parseInt(time[0]);
       int minutes=Integer.parseInt(time[1]);
       int seconds=Integer.parseInt(time[2]);


       //call start method with an instance Time class
       clock.start(new Time(hour, minutes, seconds));

       //Get first argument
       String endTime=args[1];
       String [] stopTime=endTime.split(":");

       //split the argument and get hour,minute and second
       hour=Integer.parseInt(stopTime[0]);
       minutes=Integer.parseInt(stopTime[1]);
       seconds=Integer.parseInt(stopTime[2]);
       //call start method with an instance Time class
       clock.stop(new Time(hour, minutes, seconds));

       System.out.println("Elapsed time in seconds :"+clock.getElapsedTime());

   }//end of main method.

}//end of the class TestClock

(25 points) Design a class named Clock. You should use your IDE for this exercise. The class contains private data fields for startTime and stopTime, a no argument constructor that initializes the startTime to the current time, a method named start() that resets the startTime to the given time, a stop() method that sets the endTime to the given time and a getElapsedTime() method that returns the elapsed time in seconds. Create a TestClock class to construct a Clock instance and return the elapsed time. Command line arguments should be used to send the start and end times. You should use the java.time classes. Here is sample run: java Testclock 11:45:12 11:48:13 Elapsed time in seconds is: 181 3ava TestClock 11:4512 1149:13

Explanation / Answer

import java.sql.Time;
class Clock
{

//Create two instance of Time class with default values
//for hour,minute and seconds
private Time startTime=new Time(0, 0, 0);
private Time stopTime=new Time(0, 0, 0);


//set start time
public void start(Time startTime)
{
this.startTime=startTime;
}


//set end time
public void stop(Time stopTime)
{
this.stopTime=stopTime;
}



/**The method getElapsedTime calculates the time difference
* between two times and returns seconds as return value.
* */
public int getElapsedTime()
{
int totalSeconds=0;
int hours=stopTime.getHours()-startTime.getHours();
if(hours>0)
{
int minutes=stopTime.getMinutes()-startTime.getMinutes();
if(minutes>0)
{
minutes=stopTime.getMinutes()-startTime.getMinutes();
}
else
minutes=startTime.getMinutes()-stopTime.getHours();

int seconds=stopTime.getSeconds()-startTime.getSeconds();
if(minutes>0)
{
seconds=stopTime.getSeconds()-startTime.getSeconds();
}
else
seconds=startTime.getSeconds()-stopTime.getSeconds();


totalSeconds=(hours*60*60)+(minutes*60)+seconds;
}
else
{

int minutes=stopTime.getMinutes()-startTime.getMinutes();
if(minutes>0)
{
minutes=stopTime.getMinutes()-startTime.getMinutes();
}
else
minutes=startTime.getMinutes()-stopTime.getMinutes();

int seconds=stopTime.getSeconds()-startTime.getSeconds();
if(seconds>0)
{
seconds=stopTime.getSeconds()-startTime.getSeconds();
}
else
seconds=startTime.getSeconds()-stopTime.getSeconds();


totalSeconds=hours*60*60+minutes*60+seconds;
}
//return seconds
return totalSeconds;
}//end of the getElapsedTime method


}//end of the class Clock

public class HelloWorld
{
public static void main(String[] args)
{


//Create an instance of Clock class object
Clock clock=new Clock();
//Get first argument
String startTime=args[0];

//split the argument and get hour,minute and second
String [] time=startTime.split(":");

//split the argument and get hour,minute and second
int hour=Integer.parseInt(time[0]);
int minutes=Integer.parseInt(time[1]);
int seconds=Integer.parseInt(time[2]);


//call start method with an instance Time class
clock.start(new Time(hour, minutes, seconds));

//Get first argument
String endTime=args[1];
String [] stopTime=endTime.split(":");

//split the argument and get hour,minute and second
hour=Integer.parseInt(stopTime[0]);
minutes=Integer.parseInt(stopTime[1]);
seconds=Integer.parseInt(stopTime[2]);
//call start method with an instance Time class
clock.stop(new Time(hour, minutes, seconds));

System.out.println("Elapsed time in seconds :"+clock.getElapsedTime());

}//end of main method.

}//end of the class TestClock

I think your java program compile by the above format.

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Why doesn\'t the following code compile for this assignment??? Clock Class: //Cl

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