Question

IN JAVA PLEASE HELP!

ALSO PLEASE ADD COMMENTS

Summary Build two classes (Fraction and Fraction Counter) and a Driver for use in counting the number of unique fractions read from a text file. We'll use the ArrayList class to store our list of unique Fraction Counters. Rather than designing a monolithic chunk of code in main like we did in the previous homework, we'll practice distributing our code into containers (called classes) that you will design specifically to tackle this same problem in a different and more logically organized fashion. Once again the filename containing all the fractions will be "fractions.txt" Introduction Your project is to read in a series of fractions from a text file, which will have each line formatted as follows: "A/B”. A sample text file is listed below, and the purpose of your program is to read in one line at a time and build a Fraction object from A and B. For each unique Fraction seen, your program will create a Fraction Counter object used to track the number of occurrences of that specific fraction. When all the input is consumed, your program will print out its ArrayList of unique Fraction Counters, which should report the fraction and its count - see output below. You can assume no blank lines or misleading characters; see the text file link above for the some of the input I'll use when testing your submission. Your program must reduce fractions, as demonstrated in the output below. Sample text file input: 6/3 7/3 6/3 2/1 Sample output: 2/1 has a count of 3 7/3 has a count of 1

Answer 1

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

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

G v Fraction Fraction Counter src v org.students > Fraction.java > FractionCounter.java > Test.java JRE System Library (jre 1.8.0_181] fractions.txt >

// fractions.txt (input file)

6/3
7/3
6/3
2/1

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

// Fraction.java

public class Fraction {
   private int numerator;
   private int denominator;

   public Fraction() {
       this.numerator = 0;
       this.denominator = 1;

   }

   /**
   * @param numerator
   * @param denominator
   */
   public Fraction(int numerator, int denominator) {
       this.numerator = numerator;
       if(denominator==0)
       {
           this.denominator = 1;
       }
       else
       {
       this.denominator = denominator;
       }
      
       this.reduce();
   }

   /**
   * @return the numerator
   */
   public int getNumerator() {
       return numerator;
   }

   /**
   * @param numerator the numerator to set
   */
   public void setNumerator(int numerator) {
       this.numerator = numerator;
   }

   /**
   * @return the denominator
   */
   public int getDenominator() {
       return denominator;
   }

   /**
   * @param denominator the denominator to set
   */
   public void setDenominator(int denominator) {
       this.denominator = denominator;
   }
  
  
   public boolean equals(Object other)
   {
       Fraction o=(Fraction)other;
       if(this.numerator==o.numerator && this.denominator==o.denominator)
       {
           return true;
       }
       else
       {
           return false;
       }
   }

   /* (non-Javadoc)
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return numerator+"/"+denominator;
   }
  
private void reduce() {
// reduces this fraction to lowest form
int GCD = gcd(getNumerator(), getDenominator());
setNumerator(getNumerator() / GCD);
setDenominator(getDenominator() / GCD);
}
// This method will find the gcd of numerator and denominator
private int gcd(int numerator, int denominator) {
int x = numerator, y = denominator;
if (x < 0)
x = -x;
if (y > 0)
y = -y;
if (y == 0)
return x;
else
return gcd(y, x % y);
}

  
  
}

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

// FractionCounter.java

public class FractionCounter {
   private Fraction theFraction;
   private int counter;

   public FractionCounter(Fraction theFraction) {
       this.theFraction = theFraction;
       counter = 1;

   }

   public boolean compareAndIncrement(Fraction theFraction) {
       if (this.theFraction.equals(theFraction)) {
           counter++;
           return true;
       }
       return false;
   }

   /*
   * (non-Javadoc)
   *
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return theFraction.toString() + " has a counter of " + counter;
   }

}

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

// 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 line;
ArrayList<FractionCounter> fractions=new ArrayList<FractionCounter>();
FractionCounter fc=null;
int num,den;
       try {
           Scanner sc=new Scanner(new File("fractions.txt"));
           while(sc.hasNext())
           {
               line=sc.nextLine();
               String arr[]=line.split("/");
               num=Integer.parseInt(arr[0]);
               den=Integer.parseInt(arr[1]);
              
               Fraction f=new Fraction(num,den);
              
               if(fractions.size()==0)
               {
           fc=new FractionCounter(f);
           fractions.add(fc);
             
               }
               else
               {
                   int flag=0;
                   for(int i=0;i<fractions.size();i++)
                   {
                       if(fractions.get(i).compareAndIncrement(f))
                       {
                           flag=1;
                       }  
                      
                   }
                   if(flag==0)
                   {
                       fractions.add(new FractionCounter(f));
                   }
                  
               }
           }
           sc.close();
           for(int i=0;i<fractions.size();i++)
           {
               System.out.println(fractions.get(i));
           }
       } catch (FileNotFoundException e) {
           System.out.println(e);
       }
      

   }

}

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

output:

2/1 has a counter of 3
7/3 has a counter of 1

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