一张图看懂normal,static,sealed,abstract 的 区别

+-------------------------+---+--------+--------+--------+----------+
|       Class Type        |   | normal | static | sealed | abstract |
+-------------------------+---+--------+--------+--------+----------+
| Can be instantiated     | : | yes    | no     | yes    | no       |
| Can be inherited        | : | yes    | no     | no     | yes      |
| Can inherit from others | : | yes    | no     | yes    | yes      |
+-------------------------+---+--------+--------+--------+----------+