Catching Exception in Parent Thread

Question

Hi Pros,
I have a thread having try-catch block. Whatever exception I am catching into catch block should be thrown to be handled by Parent thread.
Is there any way to do this.
Thanks,
Abhijit

Answer 1

You can't literally throw to the parent thread per se, and the concept of doing so doesn't really make any sense. But using UncaughtExceptionHandler, you can give some control to the parent thread.
package scratch;
public class Uncaught {
  public static void main (String[] args) throws Exception {
    Thread t = new Thread(new MyRunnable());
    Thread.UncaughtExceptionHandler eh = new MyUEH ();
    t.setUncaughtExceptionHandler (eh);
    t.start();
  static class MyRunnable implements Runnable {
    @Override
    public void run () {
      System.out.println ("Thread name is: " + Thread.currentThread ().getName ());
      throw new RuntimeException("Can't catch me, I'm the gingerbread thread!");
  static class MyUEH implements Thread.UncaughtExceptionHandler {
    @Override
    public void uncaughtException (final Thread t, final Throwable e) {
      System.err.println ("The uncaught exception stack trace for Thread " + t.getName() + " is: ");
      e.printStackTrace ();
}