현재 스레드 상태로 연습

Process the list of threads depending on their state: 1. If the thread isn't running yet, then start it. 2. If the thread is waiting, then interrupt it. 3. If the thread is running, check the isInterrupted flag. 4. If the thread has stopped running, then display its priority on the console.

1. Create a private MyUncaughtExceptionHandler class that waits half a second when catching an exception, and then display the secretKey, thread name, and exception message. Use String.format(...). Example: super secret key, Thread-0, This is an example.

Create a LoggingStateThread thread class, which will display all of the states (State) of the thread passed to the constructor. The LoggingStateThread thread must terminate itself after the thread passed to the constructor has stopped. The main() method is not tested.