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It's possible to synchronize a static method. When this occurs, a lock is obtained for the class itself. This is demonstrated by the static hello() method in the SyncExample class below. When we create a synchronized block in a static method, we need to synchronize on an object, so what object should we synchronize on? We can synchronize on the Class object that represents the class that is being synchronized. This is demonstrated in the static goodbye() method of SyncExample. We synchronize on SyncExample.class.
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