Java?????м??????????
???????????? ???????[ 2012/9/29 15:37:31 ] ????????
????Java????????????????Щ???????????????????????????Java????????????????
????????飺final??finally??finalize??
???????????final??finally??Java?????е?????????????????????????????????“??”?????“??”?????????????????ε????????У?????String??Math?????????ε???????????????????????????????????????????ε???????÷????????????????????????????????У?????????????????????????????????????????У????????????????????????????finalize??Object?????????finalize()??????????????????????????GC?????????????????????????????????????????????????Object???????е????????????????????finalize()????????????????????÷??????????????????????????????????
????????飺Collections??Collection??
??????????????Collections??Collection??????java.util?????????????????????????Collection???в??????????Collection????????????????????????????????????????List??Set???????????
?????????飺????????????
??????????????????????????????????????????????????????????????????????????????????????????????????????н?????????????????ж????????????????????磬???????
?????????飺???????????
?????????????????????????????????????????????檔?????abstract???ε?????????????????????????????????????????????????????????????????????
?????????飺Vector??ArrayList??LinkList??
???????????Vectot??ArrayList????????鷽???洢????????????????????????????????????????????Vector??????????????????????????????????????????ArrayList????????????????????????????LinkList???????????洢????????????????????????Щ??Ч??
?????????飺Hashtable??HashMap??
????????????????????????Map?????????key????????value?????????????1??HashMap??????????????null??????null?????Hashtable???????2??HashMap??Hashtable??contains??????????????containsValue()??containsKey()??????3??Hashtable?????Dictionary??HashMap??Java1.2??????Map????????4??Hashtable???????????????HashMap??????????
?????????飺wait()??sleep()??notify()??notifyAll()??
???????????wait()??Object?????????????????????????notify()??notify()??????????μ?????????sleep()??Thread??????????????????????????????е??????????????У???notify()??notifyAll()????Object????????????????????????????????????????????????????????????????????????
?????????λ“????”????????????л???????????????????
??????
???·???
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2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
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2021/9/17 15:19:29???·???????·
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2021/5/28 17:25:47??????APP??????????
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