Question

Step One This is the Measurable interface we saw in class; you will need to provide this class; this is it in its entirety (this is literally all you have to do for this step): public interface Measurable double getMeasure(); Step Two This is the Comparable interface that is a part of the standard Java library: public interface Comparable int compareTo (Object otherObject); Finish this class to represent a PiggyBank. A PiggyBank holds quarters, dimes, nickels, and pennies. You will need to provide constructors, but don't add any other instance variables. Add the methods that are required (NOTE: it implements both Measurable and Comparable), and add other methods only if you need them. Your getMeasure method should return the monetary value of the PiggyBank; for example if your PiggyBank has 2 quarters, 10 dimes, no nickels, and 120 pennies, the monetary value is 2.70. public class PiggyBank implements Measurable, comparable int numQuarters, numDimes, numNickels, numPennies;

Answer 1

Note :We have paste the input file in the project folder so that our program can able to detect.

Could you plz go through this code and let me know if u need any changes in this.Thank You

========================================

v PiggyBank Measurable Comparable v src v #org.students > Measurable.java > PiggyBank.java > D Test.java EJRE System Library (jre 1.8.0_181] | bankData.txt

// bankData.txt (Input file)

4
4 1 0 25
2 10 0 120
3 19 7 8
6 0 5 12

=====================================

// Measurable.java

public interface Measurable {
double getMeasure();
}

==================================

// PiggyBank.java

import java.text.DecimalFormat;

public class PiggyBank implements Comparable<PiggyBank> {
private int quarters;
private int dimes;
private int nickels;
private int pennies;
  
  
  
   /**
   * @param quarters
   * @param dimes
   * @param nickels
   * @param pennies
   */
   public PiggyBank(int quarters, int dimes, int nickels, int pennies) {
       this.quarters = quarters;
       this.dimes = dimes;
       this.nickels = nickels;
       this.pennies = pennies;
   }

public double getMeasure()
{
   double val= quarters*0.25+dimes*0.10+nickels*0.05+pennies*0.01;
   return val;
}
   @Override
   public int compareTo(PiggyBank pb) {
   if(this.getMeasure()<pb.getMeasure())
   {
       return -1;
   }
   else if(this.getMeasure()>pb.getMeasure())
   {
       return 1;
   }
   else
   {
   return 0;
   }
   }

   /* (non-Javadoc)
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       // DecimalFormat class is used to format the output
               DecimalFormat df = new DecimalFormat(".00");
       return "$"+df.format(getMeasure())+" ("+ quarters + " quarters=, "+ dimes
               + " dimes, " + nickels + " nickels, " + pennies + " pennies)";
   }
  
  

}

===========================================

// Test.java

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;

public class Test {

   public static void main(String[] args) {
String filename;
int quarters,dimes,nickels,pennies;
int size;
       /*
       * Creating an Scanner class object which is used to get the inputs
       * entered by the user
       */
       Scanner sc = new Scanner(System.in);
       ArrayList<PiggyBank> arl=new ArrayList<PiggyBank>();
       System.out.print("Enter the filename :");
       filename=sc.next();
      
       try {
           Scanner infile = new Scanner(new File(filename));
           size=infile.nextInt();
           for(int i=0;i<size;i++)
           {
               quarters=infile.nextInt();
               dimes=infile.nextInt();
               nickels=infile.nextInt();
               pennies=infile.nextInt();
               PiggyBank p=new PiggyBank(quarters, dimes, nickels, pennies);
               arl.add(p);
           }
           infile.close();
           sc.close();
          
           sort(arl);
           for(int i=0;i<size;i++)
           {
               System.out.println(arl.get(i));
           }
          
       } catch (FileNotFoundException e) {
           System.out.println(e.getMessage());
       }
      

   }

   private static void sort(ArrayList<PiggyBank> arl) {
       //This Logic will Sort the Array of elements in Decending order
       PiggyBank temp1;
       for (int i = 0; i < arl.size(); i++)
   {
   for (int j = i + 1; j < arl.size(); j++)
   {
   if (arl.get(i).getMeasure() > arl.get(j).getMeasure())
   {
   temp1 = arl.get(i);
   arl.set(i,arl.get(j));
   arl.set(j,temp1);
   }
   }
   }
      
   }

}

==========================================

Output:

Enter the filename :bankData.txt
$1.35 (4 quarters=, 1 dimes, 0 nickels, 25 pennies)
$1.87 (6 quarters=, 0 dimes, 5 nickels, 12 pennies)
$2.70 (2 quarters=, 10 dimes, 0 nickels, 120 pennies)
$3.08 (3 quarters=, 19 dimes, 7 nickels, 8 pennies)

=====================Could you plz rate me well.Thank You