public static void main(String args[]) { Complex c1 = new Complex(3, 4); Complex c2 = new Complex(1, 5); Complex add = Complex.add(c1, c2); System.out.println(add.toString()); Complex sub = Complex.sub(c1, c2); System.out.println(sub.getReal() + " + " + sub.getImag() + "i"); Complex mult = Complex.mult(c1, c2); System.out.println(mult.toString()); Complex clone = add.clone(); System.out.println(clone.toString()); }