How to fix the constant pausing of the Java countdown timer?

In Java, when implementing a countdown timer, pauses may occur due to the following reasons:

1. Using the wrong thread method. In Java, common methods to implement countdowns are Thread.sleep() and Timer class. Using the wrong thread method can cause countdowns to pause or stall. Make sure to use the correct thread method to implement countdowns.
2. Blocking the main thread. If the countdown code is running on the main thread and encounters a time-consuming operation, the main thread may be blocked, causing the countdown to pause. It is advisable to consider running the countdown code in a separate thread to avoid blocking the main thread.
3. Incorrect logic control may lead to inaccurate countdown states when writing the countdown logic. Make sure the countdown logic is correct and error-free.
4. There may be other coding issues. The countdown pause may be related to other coding issues, such as errors in variable assignments or loop conditions. Check the code logic and variable assignments to ensure there are no other problems.

If the above methods cannot solve the problem, it is recommended to provide more detailed code and problem descriptions in order to better assist in finding a solution.