public void multiply() { operand_0 = operand_1.mul(operand_0); operand_1 = new Rational(); }
/** Multiplicatie van operand 1 en operand 2 */ public void multiply() { operand_0 = operand_1.mul(operand_0); operand_1 = new Rational(); processEvent(new ActionEvent(this, ActionEvent.ACTION_PERFORMED, null)); }