Main class:


public class Main {

    public static void main(String[] args) {
Rational a = new Rational(1, 234);
Rational b = new Rational(1, 33);

System.out.println("(" + a + ")" + " + " + "(" + b + ")" + " = " + a.add(b));
System.out.println("(" + a + ")" + " - " + "(" + b + ")" + " = " + a.sub(b));
System.out.println("(" + a + ")" + " * " + "(" + b + ")" + " = " + a.mul(b));
System.out.println("(" + a + ")" + " / " + "(" + b + ")" + " = " + a.div(b));
System.out.println ("The greatest common denominator is " + a.gcd(b) + ".");    }
}


My rational class:


public class Rational {

    public Rational (int numa, int dena){
        num = numa;
        den = dena;
    }
    public Rational add(Rational o){
        return new Rational(num + o.num, den * o.den);
    }

    public Rational sub(Rational o){
        return new Rational(num - o.num, den * o.den);
    }
    public Rational mul(Rational o){
        return new Rational(num * o.num, den * o.den);
    }

    public Rational div(Rational o){
        return new Rational(num * o.den, den * o.num);
    }
    public int gcd(Rational o){
        return (den * o.den);
    }
    public String toString() {

        return ( + num + " / " + den);
      }



public int den;
public int num;
}