Catching Exceptions with an UncaughtExceptionHandler in Java (CodingClues)

Jul
11

Catching Exceptions with an UncaughtExceptionHandler in Java

MarkusJava

I’ve recently spent some hours to track down a mysterious bug and I just couldn’t find it. Since my application is using a lot of Threads/Workers it came to my mind that a RuntimeException I did not catch could be the cause. I wrote a global handler for it and found where the problem was

Somewhere in main():

Thread.setDefaultUncaughtExceptionHandler(new MyUncaughtExceptionHandler ());

The class:

public class MyUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {
public void uncaughtException(Thread t, Throwable e) {
System.err.println (“Uncaught exception by “ + t + “:”);
e.printStackTrace();
}
}

How to test it: