Exception with no thread name

Question

One of my multi-threaded applications does not include the thread name when it throws an exception. I get exceptions like below

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
    at java.util.ArrayList.rangeCheck(Unknown Source)
    at java.util.ArrayList.get(Unknown Source)
    at dataimporter.Importer.run(Importer.java:201)
    at java.lang.Thread.run(Unknown Source)

Is there anyway for it to include the thread name?

Answer 1

You can register an UncaughtExceptionHandler with your Thread and print out the information you need.

Thread thread = new Thread(..);
thread.setUncaughtExceptionHandler((t, ex) -> // fancy Java 8 syntax
    System.out.println(t.getName() + " " + ex)
); // or print the stack trace after it
thread.start();

The above has some Java 8 syntax. If you aren't using that, you can simply use an anonymous class.

UncaughtExceptionHandler handler = new UncaughtExceptionHandler() {
    @Override
    public void uncaughtException(Thread t, Throwable ex) {
        System.out.println(t.getName() + " " + ex);             
    }
};
thread.setUncaughtExceptionHandler(handler);