JAVA ДЛЯ ПОТОКОВ ИВБО / ПР-9 / GenericStack

public class GenericStack<T> {
    private T[] stack;
    private int size;
    private static final int INITIAL_CAPACITY = 10;

    @SuppressWarnings("unchecked")
    public GenericStack() {
        stack = (T[]) new Object[INITIAL_CAPACITY];
        size = 0;
    }

    public void push(T element) {
        if (size == stack.length) {
            resize();
        }
        stack[size++] = element;
    }

    public T pop() {
        if (isEmpty()) {
            throw new IllegalStateException("Stack is empty");
        }
        T element = stack[--size];
        stack[size] = null; // Устранение возможной утечки памяти
        return element;
    }

    public T peek() {
        if (isEmpty()) {
            throw new IllegalStateException("Stack is empty");
        }
        return stack[size - 1];
    }

    public boolean isEmpty() {
        return size == 0;
    }

    public int size() {
        return size;
    }

    @SuppressWarnings("unchecked")
    private void resize() {
        T[] newStack = (T[]) new Object[stack.length * 2];
        System.arraycopy(stack, 0, newStack, 0, stack.length);
        stack = newStack;
    }
}