Solving Jython Applet Problems
If you are having problems getting a Jython applet to run on
your browser, you should follow the following steps.
1. Make sure that you have a jdk 1.1 compliant browser.
At the moment these include:
- SUN's HotJava
- Unsurprisingly, this browser works extremely well with Java applets
- Microsoft's Internet Explorer 4.0
- Somewhat surprisingly, IE 4.0 is far superior to Netscape
4.0 for JDK 1.1 compliance and performance. This might
have finally been fixed with Navigator 4.06, but I haven't
had the time to do a detailed comparision recently.
- Netscape's Navigator 4.06 or later
- The latest release of Netscape's browser finally
comes with acceptable JDK 1.1 support without needing
any patches. All I can say is, it's about time!
- Note: It has been reported that the JVM in the Linux
release of Navigator 4.06 has serious problems that render
it unusable. Similar problems might occur on other Unix platforms.
- SUN's Java Activator - not currently enabled
- Jython applets should almost certainly work with the
Java Activator, but I haven't yet invested the time
to get the demo of this up and running.
2. Make sure you don't have any old releases of Jython in your class path.
- If you are running a SUN (or SUN-like) VM you need to make
sure your CLASSPATH environment variable is not
pointing to any directories with Jython .class files
- If you are running a MS VM, you should probably check
out the registry entry under
3. Send mail to jython-users
explaining your problem. Include the following information:
- What OS (name and version) and Browser (name and version) you are running
- A copy of your Java console window after failing to run an applet
- Under IE, you need to explicitly enable the Java console, or Java logging
- The URL of the applet that didn't work for you