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静态方法调用非静态成员表述不准确 #1173

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Snailclimb merged 1 commit into from
Apr 25, 2021
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静态方法调用非静态成员表述不准确 #1173

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2 changes: 1 addition & 1 deletion docs/java/basis/Java基础知识.md
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Expand Up @@ -790,7 +790,7 @@ public void f5(int a) {

### 在一个静态方法内调用一个非静态成员为什么是非法的?

由于静态方法可以不通过对象进行调用，因此在静态方法里，不能调用其他非静态变量，也不可以访问非静态变量成员。
这个需要结合 JVM 的相关知识，静态方法是属于类的，在类加载的时候就会分配内存，可以通过类名直接访问。而非静态成员属于实例对象，只有在对象实例化之后才存在，然后通过类的实例对象去访问。在类的非静态成员不存在的时候静态成员就已经存在了，此时调用在内存中还不存在的非静态成员，属于非法操作。

### 静态方法和实例方法有何不同？

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