100644 blob 7c07b52eccb6bfabbaf11b52995a9b939d7eab9c	PhantomReference.java
100644 blob 23490333b0d0be4cde4f69772d33554501130e0a	Reference.java
100644 blob 57ec4193db1e54443b05569bc4eeb82c90f5a778	ReferenceQueue.java
100644 blob 58bd14c0fa8374e35adf411f73bc3bf620a7318b	SoftReference.java
100644 blob 32d5b132c7c8c65abcd0f1497b19a94874460ff2	WeakReference.java