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The static refers to a class state, not a specific instanced object. So, any static methods are locked to the static synchronized method, but all instance methods are left unlocked. See Instrinsic...

Here's how your program flow is going:
1. main thread
start thread 2 and thread 3
2. t1 thread
print out text, wait 5 seconds
3. t2 thread
print out text

Because thread 2 and 3 are running...