// Define a class Fraction: FractionTest.java

class Fraction {
	private int numerator;
	private int denominator;

	// Constructor
	public Fraction()
	{
		numerator = 0;
		denominator = 1;
	}

	// constructor allows setting of values for numerator
	// and denominator when object is created
	public Fraction(int n, int d)
	{
		numerator = n;
		denominator = d;
	}

	// mutator method gets and sets numerator
	public void setNumerator(int n)
	{
		numerator = n;
	}
	public int getNumerator()
	{
		return numerator;
	}

	// mutator method gets and sets denominator
	public void setDenominator(int d)
	{
		denominator = d;
	}

	public int getDenominator()
	{
		return denominator;
	}

	// display method
	public String displayAsRatio()
	{
		return (numerator + "/" + denominator);
	}

	public boolean equals(Fraction other)
	{
		// Unification to compare
		if (numerator * other.getDenominator() == denominator * other.getNumerator())
			return true;
		else return false;
	}

} //end fraction class


// Define Fraction Test program
class FractionTester {
	public static void main (String[] args)
	{
		// Test hard-coded fractions
		Fraction first = new Fraction(20, 60);
		Fraction second = new Fraction(25, 75);

		System.out.println("Test 1: ");
		System.out.println("First fraction: " + first.displayAsRatio());
		System.out.println("Second fraction: " + second.displayAsRatio());
		System.out.println("Are fractions equal? " + first.equals(second));

		// Use mutator to change values
		first.setNumerator(-15);
		first.setDenominator(30);
		System.out.println("\nTest 2: ");
		System.out.println("First fraction: " + first.displayAsRatio());
		System.out.println("Second fraction: " + second.displayAsRatio());
		System.out.println("Are fractions equal? " + first.equals(second));

		second.setNumerator(-1);
		second.setDenominator(2);
		System.out.println("\nTest 3: ");
		System.out.println("First fraction: " + first.displayAsRatio());
		System.out.println("Second fraction: " + second.displayAsRatio());
		System.out.println("Are fractions equal? " + first.equals(second));

	} // end main method

} // end main class