Modify the program below and add a public method called isZero() to the Fraction class. This method will determine if a Fraction represents a zero fraction. A zero fraction has a numerator == 0, no matter what the denominator is. Your isZero() method should return a Boolean result indicating a zero fraction or otherwise. The method will be used by the client class to test whether the ‘calling fraction’ is equal to the number zero. Modify the program so that it now loops until a fraction representing zero is entered. //Import the essential package import java.util.ArrayList; import java.util.Scanner; //Define the class Fraction class Fraction { private int n, d; public Fraction() { //Initialize the values this.n = this.d = 0; } public Fraction(int n, int d) { //Initialize the variables this.n = n; this.d = d; } //Define the getter function getNum() that returns the numerator public int getNum() { //Returns numerator return n; } //Define the getter function getDen() that returns the denominator public int getDen() { //Returns denominator return d; } //Define the boolean function isZero() that returns 0 if numerator is 0 and denominator is not equals to zero public boolean isZero() { return (getNum() == 0 && getDen() != 0); } //Define the function getSimplifiedFraction() that returns the simplified fraction public String getSimplifiedFraction() { //Decalre the string variable result to store the result String result = ""; //if the numerator and denominator both are zero if(getNum() == 0 && getDen() == 0) //result is zero result = "0"; //if the numerator is zero and denominator is non-zero else if(isZero()) //result is zero result = "0"; //if the numerator is non-zero and denominator is zero else if(getNum() != 0 && getDen() == 0) //result is Undefined result = "Undefined"; //for a defined and non-zero fraction else { //if the remainder is zero if(getNum() % getDen() == 0) result = (getNum() / getDen()) + ""; //if the numerator and denominator both are greater than zero else if(getNum() < 0 && getDen() < 0) result = (getNum() * -1) + "/" + (getDen() * -1); //if any of them is zero else if(getNum() < 0 || getDen() < 0) { //if the numerator is greater than zero if(getNum() < 0) result = "- (" + (getNum() * -1) + "/" + getDen() + ")"; //if the denominator is zero else result = "- (" + getNum() + "/" + (getDen() * -1) + ")"; } //both are non-zero else result = (getNum() + "/" + getDen()); } //return the result return result; } //Define the method display() that displays the resultant fraction public void display() { //Call and display the fraction System.out.println(getSimplifiedFraction()); } } //Define the class TestFraction class TestFraction { //Define the main method public static void main(String[] args) { //Declare the variables to store the numerator and denominator int num, den; //Declare an ArrayList to store the results ArrayList fractions = new ArrayList<>(); //Create the object for scanner class Scanner sc = new Scanner(System.in); //use the do-while loop to iterate test the conditions do { //Prompts the user to enter the numerator System.out.print("Enter the num: "); //Store the Integer part only num = Integer.parseInt(sc.nextLine().trim()); //If the numerator is less than zero if(num < 0) //Break from loop break; //Prompts the user to enter the denominator System.out.print("Enter the den: "); //store the integer part only den = Integer.parseInt(sc.nextLine().trim()); //Create the object of Fraction class Fraction fraction = new Fraction(num, den); //Add the resultant fractions into the ArrayList fractions.add(fraction); //Display the resultant fraction System.out.println("Fraction added to list as: " + fraction.getSimplifiedFraction() + "\n"); }while(num >= 0); //Display all fractions that are stored in the ArrayList System.out.println("\nDISPLAYING ALL FRACTIONS:\n" + "-------------------------"); //Use the loop to display the values stored in the ArrayList for(Fraction fr : fractions) fr.display(); //to print the new line System.out.println(); } }
Modify the program below and add a public method called isZero() to the Fraction class. This method will determine if a Fraction represents a zero fraction. A zero fraction has a numerator == 0, no matter what the denominator is. Your isZero() method should return a Boolean result
indicating a zero fraction or otherwise. The method will be used by the client class to test whether the ‘calling fraction’ is equal to the number zero. Modify the program so that it now loops until a fraction representing zero is entered.
//Import the essential package
import java.util.ArrayList;
import java.util.Scanner;
//Define the class Fraction
class Fraction
{
private int n, d;
public Fraction()
{
//Initialize the values
this.n = this.d = 0;
}
public Fraction(int n, int d)
{
//Initialize the variables
this.n = n;
this.d = d;
}
//Define the getter function getNum() that returns the numerator
public int getNum()
{
//Returns numerator
return n;
}
//Define the getter function getDen() that returns the denominator
public int getDen()
{
//Returns denominator
return d;
}
//Define the boolean function isZero() that returns 0 if numerator is 0 and denominator is not equals to zero
public boolean isZero()
{
return (getNum() == 0 && getDen() != 0);
}
//Define the function getSimplifiedFraction() that returns the simplified fraction
public String getSimplifiedFraction()
{
//Decalre the string variable result to store the result
String result = "";
//if the numerator and denominator both are zero
if(getNum() == 0 && getDen() == 0)
//result is zero
result = "0";
//if the numerator is zero and denominator is non-zero
else if(isZero())
//result is zero
result = "0";
//if the numerator is non-zero and denominator is zero
else if(getNum() != 0 && getDen() == 0)
//result is Undefined
result = "Undefined";
//for a defined and non-zero fraction
else
{
//if the remainder is zero
if(getNum() % getDen() == 0)
result = (getNum() / getDen()) + "";
//if the numerator and denominator both are greater than zero
else if(getNum() < 0 && getDen() < 0)
result = (getNum() * -1) + "/" + (getDen() * -1);
//if any of them is zero
else if(getNum() < 0 || getDen() < 0)
{
//if the numerator is greater than zero
if(getNum() < 0)
result = "- (" + (getNum() * -1) + "/" + getDen() + ")";
//if the denominator is zero
else
result = "- (" + getNum() + "/" + (getDen() * -1) + ")";
}
//both are non-zero
else
result = (getNum() + "/" + getDen());
}
//return the result
return result;
}
//Define the method display() that displays the resultant fraction
public void display()
{
//Call and display the fraction
System.out.println(getSimplifiedFraction());
}
}
//Define the class TestFraction
class TestFraction
{
//Define the main method
public static void main(String[] args)
{
//Declare the variables to store the numerator and denominator
int num, den;
//Declare an ArrayList to store the results
ArrayList<Fraction> fractions = new ArrayList<>();
//Create the object for scanner class
Scanner sc = new Scanner(System.in);
//use the do-while loop to iterate test the conditions
do
{
//Prompts the user to enter the numerator
System.out.print("Enter the num: ");
//Store the Integer part only
num = Integer.parseInt(sc.nextLine().trim());
//If the numerator is less than zero
if(num < 0)
//Break from loop
break;
//Prompts the user to enter the denominator
System.out.print("Enter the den: ");
//store the integer part only
den = Integer.parseInt(sc.nextLine().trim());
//Create the object of Fraction class
Fraction fraction = new Fraction(num, den);
//Add the resultant fractions into the ArrayList
fractions.add(fraction);
//Display the resultant fraction
System.out.println("Fraction added to list as: " + fraction.getSimplifiedFraction() + "\n");
}while(num >= 0);
//Display all fractions that are stored in the ArrayList
System.out.println("\nDISPLAYING ALL FRACTIONS:\n"
+ "-------------------------");
//Use the loop to display the values stored in the ArrayList
for(Fraction fr : fractions)
fr.display();
//to print the new line
System.out.println();
}
}
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