Hi, I have installed the following JDK on my machine:
java version "1.6.0" Java(TM) SE Runtime Environment (build pxi3260sr12-20121025_01(SR12)) IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux x86-32 jvmxi3260sr12-20121024_126067 (JIT enabled, AOT enabled) J9VM - 20121024_126067 JIT - r9_20120914_26057 GC - 20120928_AA) JCL - 20121014_01 When I try to run the following test from the IBM developerworks wrt WeakReferences and ReferenceQueue, the reference is never put on the reference queue (the problem that I also had in the WeakHashtable testcase): url: http://www.ibm.com/developerworks/library/j-refs/ output: Example of incorrectly holding a strong reference object is MyObject@3b203b2 The weak reference is java.lang.ref.WeakReference@46d046d Polling the reference queue returns null Getting the referent from the weak reference returns MyObject@3b203b2 Calling GC Polling the reference queue returns null Getting the referent from the weak reference returns null Example of correctly releasing a strong reference object is MyObject@2bd62bd6 The weak reference is java.lang.ref.WeakReference@37c637c6 Polling the reference queue returns null Getting the referent from the weak reference returns MyObject@2bd62bd6 Set the obj reference to null and call GC Polling the reference queue returns null Getting the referent from the weak reference returns null In finalize method for this object: MyObject@3b203b2 In finalize method for this object: MyObject@2bd62bd6 Polling the reference queue always returns null, even when the WeakReference has lost its referent. Can somebody confirm this? Thanks, Thomas --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
