synchronization lock.

Perhaps you're new to programming. You need to read the specifications/documentation with an eye to explicit meaning; not always what seems true.

wait() releases the synchronization lock. This has nothing to do with the Lock class.

Every object has a built-in monitor. This way you can synchronize on any object. That is, you can create an object in one thread, pass a reference to that object to another thread and both threads can synchronize on the object.

Locks come with the java.util.concurrent.locks package. You need to read the description for that package. (Too much to do here.)