public class Main {
    public static void main(String[] args) {
        Stack<Integer> intStack = new Stack<>(3);
        intStack.push(199);
        intStack.push(200);

        System.out.println(intStack.size());

        System.out.println(intStack.top());
        intStack.pop();
        System.out.println(intStack.top());
        intStack.pop();
        
        
        intStack.push(200);
        intStack.pop();
        intStack.pop();
        intStack.pop();
        intStack.push(500);
        System.out.println(intStack.isEmpty());
        System.out.println(intStack.isFull());
        System.out.println(intStack.top());
        System.out.println(intStack.isFull() + ", isEmpty " + intStack.isEmpty());
        System.out.println(intStack.top());
        intStack.pop();
        intStack.pop();
        intStack.pop();
        System.out.println(intStack.isEmpty());

        Stack<String> stringStack = new Stack<>(4);
        stringStack.push("Hello world");
        System.out.println(stringStack.size());
//        stringStack.pop();
        System.out.println(stringStack.size());
        System.out.println(stringStack.isEmpty());
        StringStack st = new StringStack(1);
        st.push("Hello world");
        System.out.println(st.isFull());
        System.out.println(st.top());
        System.out.println(st.isEmpty());
        System.out.println(st.top());
        st.pop();


        Stack<Integer> numberStack = new Stack<>(3);
        Stack<String> stringStack1 = new Stack<>(6);
        Stack<Double> doubleStack = new Stack<>(100);
        //By using a generic stack, we eliminated the need for IntStack and StringStack class.






    }
}