MainStack

public class MainStack {
    public static void main(String[] args) {
        Stack test = new Stack();
        test.push(40);
        test.push(20);
        test.push(30);
        System.out.println("Stack :" + test.tumpukan.toString());
        System.out.println("Ukuran :" + test.size());
        System.out.println("Setelah di POP :");
        test.pop();
        System.out.println("Stack :" + test.tumpukan.toString());
        System.out.println("Ukuran :" + test.size());
    }
}