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                # 1-4.Java的事件委托機制和垃圾回收機制 java 事件委托機制的概念,一個源產生一個事件并將它送到一個或多個監聽器那里。在這種方案中,監聽器簡單的等待,直到它收到一個事件。一旦事件被接受,監聽器將處理這個事件,然后返回。比如:在swing中,有很多監聽器,。。。。 ***** 垃圾回收機制 垃圾收集是將分配給對象但不再使用的內存回收或釋放的過程。如果一個對象沒有指向它的引用或者其賦值為null,則次對象適合進行垃圾回收
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