public static void main(String[] args) {
Leaf a = new Leaf(5);
Leaf b = new Leaf(3);
Leaf c = new Leaf(2);
Leaf d = new Leaf(6);
Composite mul = new Composite(Operator.mul, a, b);
Composite div = new Composite(Operator.div, mul, c);
Composite plus = new Composite(Operator.plus, div, d);
plus.operation();
}
public static void main(String[] args) {
Composite root = new Composite("Root");
Component a = new Leaf("A");
Composite b = new Composite("B");
Component b1 = new Leaf("B-1");
Component b2 = new Leaf("B-2");
Component b3 = new Leaf("B-3");
b.addChild(b1);
b.addChild(b2);
b.addChild(b3);
Component c = new Leaf("C");
root.addChild(a);
root.addChild(b);
root.addChild(c);
root.operation();
}