这是我在资料上看到的,希望能帮到你。
这样会产生歧义。例子如下:
class Outer {
int outerX;
Inner inner1 = new Inner();
Inner inner2 = new Inner();
class Inner {
int innerX;
}
}
Outer outer1 = new Outer();
Outer outer2 = new Outer();
假如innerX是static的,那么这个static的含义是
1:仅是同一outer实例下的不同inner实例共享:
outer1.inner1.innerX=outer1.inner2.innerX,And
outer2.inner1.innerX=outer2.inner2.innerX,But
outer1.inner1.innerX!=outer2.inner1.innerX,Hence
outer1.inner2.innerX!=outer2.inner2.innerX
2: 所有outer实例的inner实例都共享:
outer1.inner1.innerX=outer1.inner2.innerX,And
outer2.inner1.innerX=outer2.inner2.innerX,And
outer1.inner1.innerX=outer2.inner1.innerX,Hence
outer1.inner2.innerX=outer2.inner2.innerX |