java 泛型数组

public class GenericArrayWithTypeToken<T> {
    private T[] array;

    public GenericArrayWithTypeToken(Class<T> type,int sz) {
        array = (T[]) Array.newInstance(type, sz);
        //array = (T[])new Object[sz]; 会出现类型转换异常
    }
    
    public void put(int index,T item) {
        array[index] = item;
    }
    public T get(int index) {
        return array[index];
    }
    
    public T[] rep() {
        return array;
    }
    public static void main(String[] args) {
        GenericArrayWithTypeToken<Integer> gai = 
                new GenericArrayWithTypeToken<>(Integer.class, 10);
        Integer[] ia = gai.rep();
    }
    
    

}