public static void main(String[] args) {
Rational d, e, f;
d = new Rational(1, 2);
e = new Rational(2, 3);
f = new Rational(2, 4);
// System.out.println(d.getA());
System.out.println(d.ratNum());
System.out.println(d.equals(e));
System.out.println(d.equals(f));
System.out.println((d.mult(f)).ratNum());
System.out.println(d.compareTo(e));
}
