I dont understand what they want me to do Download the class Time.java -Create a

Question

I dont understand what they want me to do

Download the class Time.java
-Create a new class called Concert.java based on the class diagram below

Concert

_________________

-name: String

-startTime:Time

-endTime:Time

_____________________

+<<constructor>> Concert (n:String,start: Time, end:Time)

+toString():String

Create a class called ConcertApp.java .
- This class includes the main method.
-Inside the main method create an instance of Concert. Initialize it with values of your choice.
-Print the newly created concert

public class Time
{
   private int hours;
   private int minutes;
   private int seconds;

   public Time(int h, int m, int s)
   {
       setTime(h, m, s);
   }

   public Time()
   {
   }

   public void setHours(int h)
   {
       hours = ((h >= 0 && h < 24) ? h : 0);
   }

   public void setMinutes(int m)
   {
       minutes = ((m >= 0 && m < 60) ? m : 0);
   }

   public void setSeconds(int s)
   {
       seconds = ((s >= 0 && s < 60) ? s : 0);
   }

   public void setTime(int h, int m, int s)
   {
       setHours(h);
       setMinutes(m);
       setSeconds(s);
   }

   public String toMilitary()
   {
       return String.format("%02d:%02d:%02d", hours, minutes, seconds);
   }

   @Override
   public String toString()
   {
       return String.format("%d:%02d:%02d %s",
               (hours == 0 || hours == 12) ? 12 : hours % 12, minutes,
               seconds, (hours < 12) ? "AM" : "PM");
   }

}

Explanation / Answer

/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Time
{
   private int hours;
   private int minutes;
   private int seconds;

   public Time(int h, int m, int s)
   {
       setTime(h, m, s);
   }

   public Time()
   {
   }

   public void setHours(int h)
   {
       hours = ((h >= 0 && h < 24) ? h : 0);
   }

   public void setMinutes(int m)
   {
       minutes = ((m >= 0 && m < 60) ? m : 0);
   }

   public void setSeconds(int s)
   {
       seconds = ((s >= 0 && s < 60) ? s : 0);
   }

   public void setTime(int h, int m, int s)
   {
       setHours(h);
       setMinutes(m);
       setSeconds(s);
   }

   public String toMilitary()
   {
       return String.format("%02d:%02d:%02d", hours, minutes, seconds);
   }

   @Override
   public String toString()
   {
       return String.format("%d:%02d:%02d %s",
               (hours == 0 || hours == 12) ? 12 : hours % 12, minutes,
               seconds, (hours < 12) ? "AM" : "PM");
   }

}

public class Concert extends Time{

public void Concert(String name, String startTime, String endTime){

System.out.println("Name of the concert: " + name);

System.out.println("Start time is :" + startTime);

System.out.println("End time is :" + endTime);

}

public static void main(String args[]){

String name="Linkin Park";

Time Start_time=new Time(10,30,00);

Time End_time=new Time(11,30,00);

Concert c=new Concert(name, Start_time.toString(), end_Time.toString());

}

}

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