ThreadBasedCatcher - Demonstrate catching uncaught exceptions

          
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

/**
 * ThreadBasedCatcher - Demonstrate catching uncaught exceptions 
 * thrown in an unrelated Thread.
 * @author ian
 * @verion $Id: ThreadBasedCatcher.java,v 1.2 2004/03/20 20:43:27 ian Exp $
 */
public class ThreadBasedCatcher extends JFrame{

  public static void main(String[] args) {
    new ThreadBasedCatcher().setVisible(true);
  }
  public ThreadBasedCatcher(){
    Container cp = getContentPane();
    JButton crasher = new JButton("Crash");
    cp.add(crasher);
    crasher.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e){
        throw new RuntimeException("You asked for it");
      }
    });
    Thread.setDefaultUncaughtExceptionHandler(
        new Thread.UncaughtExceptionHandler(){
          public void uncaughtException(Thread t, Throwable ex){
            System.out.println(
              "You crashed thread " + t.getName());
            System.out.println(
              "Exception was: " + ex.toString());
          }
        });
    pack();
  }
}

Related examples in the same category

1.	Illustrate various Exceptions
2.	Experience exceptions
3.	StackTrace
4.	Getting the Stack Trace of an Exception
5.	What happens if a method declares an unchecked exception?
6.	Simple demo of exceptions
7.	Simple demo of exceptions, with finally clause
8.	Exception Catcher
9.	Turning off Checked exceptions
10.	Demonstrates exception chaining
11.	Finally is always executed
12.	Demonstrating the Exception Methods
13.	Further embellishment of exception classes
14.	The finally clause is always executed
15.	Your own Exception class
16.	Catching exception hierarchies
17.	How an exception can be lost
18.	Exception in main method
19.	Ignoring RuntimeExceptions
20.	Demonstrating fillInStackTrace()
21.	Put printStackTrace() into a String: redirect the StackTrace to a String with a StringWriter/PrintWriter
22.	Rethrow a different object from the one that was caught
23.	Inheriting your own exceptions
24.	Overridden methods may throw only the exceptions
25.	Returns the output of printStackTrace as a String.
26.	Locates a particular type of exception
27.	Throw Exception Out
28.	Get Deepest Throwable
29.	Make a string representation of the exception
30.	Utility methods for dealing with stack traces
31.	Returns the root cause of an exception
32.	Utility class to work with throwables
33.	Print all of the thread's information and stack traces
34.	Convert an exception to a String with full stack trace
35.	Return stack trace from the passed exception as a string
36.	Create a new RuntimeException, setting the cause if possible.
37.	Create a new Exception, setting the cause if possible.
38.	Set the cause of the Exception. Will detect if this is not allowed.
39.	Get the stack trace of the supplied exception.
40.	Display Stack Trace Information with StackTraceElement
41.	A collection of utility methods for manipulating exceptions
42.	A frame with a panel for testing various exceptions
43.	Convert Throwable to string
44.	Convert the result of Exception.getStackTrace to a String
45.	Prints the stack trace of the specified throwable to a string and returns it.
46.	Get Stack Trace Element
47.	Get stack trace and cause exception
48.	Exception Helper
49.	Exception Util

ThreadBasedCatcher - Demonstrate catching uncaught exceptions : Exceptions « Language Basics « Java

Related examples in the same category