在Java中，volatile变量是否可以定义为static？ [英] Can volatile variable be defined as static in java?

问题描述

我可以声明这样的东西

static volatile boolean first=false;

推荐答案

展开迈克尔的评论。

static 仅仅意味着不与包含类的实例相关联。

static simply means not associated with an instance of the containing class.

volatile 只是意味着该值可能被其他线程更改而没有警告。

volatile simply means that the value may be changed by other threads without warning.

所以你的问题归结为一个不与包含类的实例相关联的字段可以在没有警告的情况下被另一个线程改变？

So your question boils down to "can a field not associated with an instance of the containing class be changed by another thread without warning?"

Michael指出，这个问题的答案是肯定的。实例关联与并发修改正交。

As Michael pointed out, the answer to that question is yes. Instance association is orthogonal to concurrent modification.

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