validateTree in Java 7.x doesnt work (in Java 6.x was fine)

Question

My version of java is:

Java Plug-in 10.3.1.255 Using JRE version 1.7.0_03-b05 Java HotSpot(TM) Client VM

So when I had version

Answer 1

"It's not a bug, it's a feature" of java 7 ;)

This function should be called while holding treeLock

This is to force you writing :

synchronized(getTreeLock()) {
     validateTree();
}