Demo for default/global exception handler

DefaultExceptionHandler.java

public class DefaultExceptionHandler implements Runnable {
    
    public void run() {
      //throw new RuntimeException();
      new Test().err();
    }
    
    public static void main(String[] args) {
        Thread thread = new Thread(new DefaultExceptionHandler());
        thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler(){
          public void uncaughtException(Thread thread, Throwable e) {
              e.printStackTrace();
              System.out.println("Exception caught: " + e);
          }
        });
        // call run() function
        thread.start();
    }
    
    public class Test{
      public void err(){
        throw new RuntimeException();
      }
    }
}