Question

Share Edit & Create aanmethod that tests all three overloaded methods. Save the application as Billing.java. a. Create a FitnessTracker class that includes data fields for a fitness activity the number of minutes spent participating, and the date. The class includes methods to get each field. In addition, create a default constructor that automatically sets the activity to running, the minutes to 0, and the date to January 1 of the current year. Save the file as Fitness Tracker. java. Create a application that demonstrates each method works correctly, and save it as TestFitnessTracker.java. 3.

it's a JAVA program.

Answer 1

a.

class FitnessTracker
{
   private String activity;
   private int numOfMinutes;
   private String date;
  
   //default constructor
   public FitnessTracker()
   {
       activity = "running";
       minutes = 0;
       date = "January 1, 2019";
      
   }

public String getActivity()
   {
       return activity;
   }
   public int getNumOfMinutes()
   {
       return numOfMinutes;
   }
   public String getDate()
   {
       return date;
   }

}
b.

// overloaded constructor
   public FitnessTracker(String activity,int numOfMinutes, String date)
   {
       this.activity = activity;
       this.numOfMinutes = numOfMinutes;
       this.date = date;
   }
  

c.

class FitnessTracker2
{
   private String activity;
   private int numOfMinutes;
   private String date;
  
   //default constructor
   public FitnessTracker2()
   {
      
       this("running",0,"January 1, 2019"); // calling parameter constructor using this
      
   }
   // overloaded constructor
   public FitnessTracker2(String activity,int numOfMinutes, String date)
   {
       this.activity = activity;
       this.numOfMinutes = numOfMinutes;
       this.date = date;
   }
   public String getActivity()
   {
       return activity;
   }
   public int getNumOfMinutes()
   {
       return numOfMinutes;
   }
   public String getDate()
   {
       return date;
   }
  
}
class TestFitnessTracker
{
   public static void main (String[] args)
   {
       FitnessTracker2 f = new FitnessTracker2();
      
       System.out.println("Fitness activity : "+f.getActivity());
       System.out.println("Number of minutes : "+f.getNumOfMinutes());
       System.out.println("Date : "+f.getDate());
      
      
   }
}

Output:

Fitness activity : running
Number of minutes : 0
Date : January 1, 2019

Do ask if any doubt. Please upvote.