1. Add two constructors to your fraction class. One should be a default constructor which creates the...

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Question:

1. Add two constructors to your fraction class. One should be a default constructor which creates the fraction 0/1. The other should accept numerator and denominator arguments.

2. Add a method dblValue to your fraction class which returns the double precision approximate value of the fraction. Eg, if a client has a fraction f which represents 1 / 2 then f.dblValue() should return the double number 0.5.

3. Add a private method simplify to your fraction class which converts the fraction to its simplest form. For example, the fraction 20/60 should be stored as 1/3.

4. Add a toString method to your fraction class which returns the fraction as a String in the form “x/y”, where x and y are numerator and denominator respectively.

5. Write a client program which allows the user to add up any number of non-zero fractions. The program should display the running total as an exact fraction (in simplified form as x/y) and as an approximate double value. The user can finish by entering a fraction which represents zero.

NOTE: Fraction class from code below

Program in NETBEANS

package com.frac;
import java.util.Scanner;

/*
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*/
class Fraction
{
// question 1
private int numerator;
private int denominator ;

// Function to get input
public void get_input( int n ,int d)
{
// for question 4
if (d == 0){
d = 1;
} else if (d<0){
n *= -1;
d *= -1;
}
numerator=n;
denominator=d;
reduce();
}

private int gcd(int n1, int n2){
if (n2 == 0){
return n1;
}
return gcd(n2, n1 % n2);
}

// question 2
public boolean isZero(){
return numerator == 0;
}

// question 3
public boolean equals(Fraction o){
return numerator == o.numerator && denominator == o.denominator;
}

// question 3
public Fraction add(Fraction o){
int denom = denominator * o.denominator;
int num = (denom / denominator) * numerator + (denom / o.denominator) * o.numerator;
Fraction res = new Fraction();
res.numerator = num;
res.denominator = denom;
res.reduce();
return res;
}

public int getDenominator() {
return denominator;
}

public int getNumerator() {
return numerator;
}

public void setDenominator(int denominator) {
if (denominator < 0){
numerator *= -1;
denominator *= -1;
} else if (denominator == 0){
denominator = 1;
}
this.denominator = denominator;
reduce();
}

public void setNumerator(int numerator) {
this.numerator = numerator;
reduce();
}

// Function to print output
public void printOutput ()
{
System.out.println("Fraction is :"+ numerator +"/" + denominator);
}

private void reduce(){
int gd = this.gcd(this.numerator, this.denominator);
numerator = numerator / gd;
denominator = denominator / gd;
}

}

class Mainprogram {
// Declare a Main Function to get inputs and call fraction class methods
public static void main(String args[])
{
Scanner scn=new Scanner(System.in);
// Code 1 to check repeated character in string
// Take String From User
System.out.println ( "Enter the String");
String str = scn.next();
// Flg is variable that will change if any same character
boolean flag=true;
for (int i = 0; i < str.length(); i++)
for (int j = i + 1; j < str.length(); j++)
if (str.charAt(i) == str.charAt(j))
flag=false;
// if flag = false then string has repeated characters
if (!flag)
System.out.println("The String " + str + " has repeated characters");
else
System.out.println("The String " + str + " has no repeated characters");
// Now from here we Code 2 of fraction class has started i.e FractionFDemo .java
// make a object of Fraction Class
Fraction obj = new Fraction();
Fraction obj2 = new Fraction();
int n,d;
// Repeat the loop until numerator is negative
do
{
// Take numerator and denominator from user
System.out.println ( "Enter the numerator and denominator ");
n = scn.nextInt();
d = scn.nextInt();
// If numerator>0 then only call class methods
obj.get_input(n,d);
if(n>0)
{
// Call methods to print the Fraction
obj.printOutput();

System.out.println ( "Enter the numerator and denominator ");
n = scn.nextInt();
d = scn.nextInt();

obj2.get_input(n, d);
Fraction sum = obj.add(obj2);
// question 3
// check equality
System.out.println("isEqual: "+ obj.equals(obj2));
// calculate sum
System.out.println("Sum = ");
sum.printOutput();
}

} while(!obj.isZero()); // question 2

}
}