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关于虚引用问题 #896

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JulyJunWu opened this issue Mar 21, 2020 · 1 comment

JulyJunWu commented Mar 21, 2020

1.虚引用必须配合引用队列使用
2.在对虚引用的描述未说明,且案例也是错误示范.
从JDK的PhantomReference源码可知,该类只有一个构造器,如下
PhantomReference(T referent, ReferenceQueue<? super T> q);

wangpeipei90 commented Mar 22, 2020

Plus, calling get() on a PhantomReference always returns null.

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