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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=4418 Race Condition in net.serversocketfactory.java ------- Additional Comments From [EMAIL PROTECTED] 2001-10-25 18:09 ------- This is the double-check lock idiom, which is fatally flawed. q.v. : The "Double-Checked Locking is Broken" Declaration http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html Can double-checked locking be fixed? No matter how you rig it, double-checked locking still fails http://www.javaworld.com/javaworld/jw-05-2001/jw-0525-double.html theFactory should be initialized as a static, that is private static ServerSocketFactory theFactory = new ServerSocketFactory(); either that, or the getDefault() method must be synchronised.
