队列里面的时候，我们可以知道它所引用的哪些对对象是死引用（Dead Reference）。而这种引用和弱引用的区别在于： 弱引用（WeakReference）是在对象不可达的时候尽快进入ReferenceQueue队列的，在finalizati...
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标记阶段最后也没有标记的对象是应用程序不可获得的对象(死对象)，因为不存在从根集经过任何引用序列找到这些对象的路径。
Objects that are unmarked at the end of the mark phase are unreachable by the application (dead) because there's no path from the root set through any series of references to find them.
现在他们正在回到家里，这个事业的泥瓦匠也是一个传教士，引用《传道书》说：“生有时，死有时；
Now they are returning home and the unemployed mason, who is also a preacher, quotes Ecclesiastes: "A time to be born and a time to die, a time to plant and a time to uproot.
有人曾引用古怪的Gaga说过的话，她说，她宁愿死都不愿粉丝们看不到她穿着这双个性的厚底鞋。
Crazy Gaga has been quoted saying she would rather die than have her fans not see her in a pair of high heels.
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