# 多线程环境下，局部变量和全局变量都会共享吗？

局部变量不会受多线程影响

成员变量会受到多线程影响

多个线程调用的同一个对象的同一个方法：

* 如果方法里无成员变量，不受任何影响
* 如果方法里有成员变量，只有读操作，不受影响，存在赋值操作，有影响


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