Improper thread management can lead to resource leaks and performance issues.
Spawning new threads directly, such as using `new Thread()`, can lead to unbounded thread creation, consuming system resources. Use thread pools, like `ExecutorService`, to manage threads efficiently. For example, `ExecutorService executor = Executors.newFixedThreadPool(5);` controls the maximum number of concurrent threads, preventing resource exhaustion.
Additional Notes
Why is it important to manage threads efficiently in Java applications?