Package java.lang.ref

Low level manipulation and monitoring of object references.

Class Summary

PhantomReference A phantom reference is useful, to get notified, when an object got finalized.
Reference This is the base class of all references.
ReferenceQueue This is the queue, where references can enqueue themselve on.
SoftReference A soft reference will be cleared, if the object is only softly reachable and the garbage collection needs more memory.
WeakReference A weak reference will be cleared, if the object is only weakly reachable.
Low level manipulation and monitoring of object references.