通用动态数组未正确更新属性

public class GenericDynamicArray<T> {
    private Object[] array;
    private int size;
    private int capacity;

    public GenericDynamicArray() {
        this.capacity = 10; // 初始容量为10
        this.size = 0; // 初始长度为0
        this.array = new Object[capacity];
    }

    public void add(T element) {
        if (size == capacity) {
            expandArray(); // 扩容数组
        }
        array[size++] = element;
    }

    public void remove(int index) {
        if (index < 0 || index >= size) {
            throw new IndexOutOfBoundsException("Index out of range");
        }
        System.arraycopy(array, index + 1, array, index, size - index - 1);
        array[--size] = null;
    }

    public int getSize() {
        return size;
    }

    public int getCapacity() {
        return capacity;
    }

    private void expandArray() {
        int newCapacity = capacity * 2;
        Object[] newArray = new Object[newCapacity];
        System.arraycopy(array, 0, newArray, 0, size);
        array = newArray;
        capacity = newCapacity;
    }
}

GenericDynamicArray<Integer> array = new GenericDynamicArray<>();
array.add(1);
array.add(2);
array.add(3);

System.out.println("Size: " + array.getSize()); // 输出：Size: 3
System.out.println("Capacity: " + array.getCapacity()); // 输出：Capacity: 10

array.remove(1);

System.out.println("Size: " + array.getSize()); // 输出：Size: 2
System.out.println("Capacity: " + array.getCapacity()); // 输出：Capacity: 10