In this exercise, you must take your Fraction class from earlier and extend it by adding a few handy methods. YOUR JOB: Implement the following methods in the Fraction class: public void add(Fraction other) public void subtract(Fraction other) public void multiply(Fraction other) public int getNumerator() public int getDenominator() public void setNumerator(int x) public void setDenominator(int x) public String toString()