Final answer:
The wait() method in Java has the signature 'public final void wait()throws InterruptedException', which includes a checked exception that indicates a thread has been interrupted while waiting.
Step-by-step explanation:
The signature of the wait() method in Java is: public final void wait()throws InterruptedException. This method is used to make the current thread wait until another thread invokes the notify() or notifyAll() method for this object. The method is declared as final, so it cannot be overridden by subclasses. It also declares that it may throw an InterruptedException, which is a checked exception indicating that the thread has been interrupted while waiting.