advancedMultithreading & Concurrency306 of 436
Analyze a multithreading scenario involving synchronized instance vs static methods
Tests whether you know a synchronized instance method locks on 'this' (so different instances don't block each other), while a synchronized static method locks on the Class object (shared across every instance) -- mixing the two in a scenario means an instance-method call and a static-method call can run concurrently on the same data without ever actually excluding each other.
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