public class Stack<T> {
    private Object[] elementsofstack;
    private int size = 0;

    public Stack(int capacity) {
        elementsofstack = new Object[capacity];
    }

    public void push(T item) {
        int lengthofstack = elementsofstack.length;
        if (size == lengthofstack) {
            System.out.println("Stack is full!");
            return;
        }
        //size= size +1;
        elementsofstack[size] = item;
        size = size + 1;
    }

    public T pop() {
        if (isempty()) {
            System.out.println("Stack is empty!");
            return null;
        }
        size= size - 1;
        return (T) elementsofstack[size];
    }

    public boolean isempty() {
        if(size == 0)
        {
            return true;
        }
        else if(size<=0)
        {
            System.out.println("there might be issue!\n>size value:"+size);
            return false;
        }
        else
        {
            return false;
        }
        
    }

    public Object[] getElements() {
        return elementsofstack;
    }

    public int getSize() {
        //System.out.println("used getSize func.\n>size value:"+size);
        return size;
    }

}