Architecture / src / main / java / proto / Main.java

package proto;

public class Main {

	public static void main(String[] args) {
		A ins[] = { new A(10), new B(5), new C(7), new D(8) };
		for (int i = 0; i < 4; i++) {
			System.out.println(ins[i].get());
		}
	}

}