Java垃圾收集到哈希表 [英] Java garbage collect to hashtable

问题描述

java会将垃圾签名的东西收集为对象吗?

Does java collect the garbage-signed things as objects?

如果是，我可以告诉Java以编程方式将它们定向到我的哈希表之一(接受对象正确吗?)?

If yes, can i tell java to direct them to one of my hashtables(accepts objects right?) programmatically?

我对此功能很好奇.我知道System.gc()是命令，但是我该如何解决第一个问题?我可以吗?

I am curious about this functionality.I know System.gc() is the command but how can i achieve first question? Can i?

 myTrashBin=System.gc().getObjectList(); //???

如果没有，也许可以通过自定义类来创建此功能.

If not, may be there could be a way to create this functionality by custom classes.

最后一个问题:我们如何覆盖System.gc()?

Last question: how can we override System.gc() ?

谢谢.

推荐答案

这不受您的控制.如果无法访问您的对象，则GC将收集这些对象. System.gc()只是一个提示，不能被依赖.

This isn't under your control. If your objects are unreachable then GC will collect these. System.gc() is nothing more than a hint, and can't be relied upon.

finalize()可能很有趣，但请阅读此问题的答案以了解限制等. PhantomReferences 可能也很有趣.

finalize() may be of interest, but read the answers to this question to understand limitations etc. PhantomReferences may also be of interest.

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