| 软件包 | 描述 |
|---|---|
| java.lang.ref |
提供参考对象类，它支持与垃圾收集器的有限度的交互。
|
| Class and Description |
|---|
| Reference
参考对象的抽象基类。
|
| ReferenceQueue
在检测到适当的可达性更改后，引用队列被垃圾收集器附加到哪个已注册的参考对象。
|
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