【boxing & unboxing】 int i = 123; // The following line boxes i. object o = i; o = 123; i = (int)o; // unboxing View Code 相关文章： 2021-07-14 2022-12-23 2021-09-06 2021-10-02 2021-07-16 2021-06-24 2022-03-05 2022-12-23