The implementation of WeakHashMap illustrates a common idiom with weak references — that some internal object extends WeakReference.

WeakHashMap的实现展示了弱引用的一种常见用法——一些内部对象扩展WeakReference。

youdao

The implementation of WeakHashMap illustrates a common idiom with weak references — that some internal object extends WeakReference.

WeakHashMap的实现展示了弱引用的一种常见用法——一些内部对象扩展WeakReference。

youdao