java - Java中的静态和非静态同步

Question

this question中有这样的说法那个

there is no link between synchronized static methods and sync'ed non static methods

好吧，这很简单，但是如果非静态方法中的代码调用静态方法怎么办？该线程是否会同时持有静态(与类关联)和非静态(与类实例关联)监视器？

Answer 1

Will this thread hold both static(associated with class) and non-static (associated with an instance of a class) monitors?

是的，那是因为，

as per Java Language Specification 8.4.3.6,

For a class (static) method, the monitor associated with the Class object for the method's class is used. For an instance method, the monitor associated with this (the object for which the method was invoked) is used.

毕竟 2 个监视器将被单独定义。