To find the Java Control Panel:
MacOS: In the Finder, open Applications/Utilities/Java Preferences
Windows: On the Windows Control Panel, open the Java icon.
Linux+Firefox: Look for the java plugin link in ~/.mozilla/plugins. It will look like
libnpjp2.so, and may also be in the directories ~/.firefox/plugins or
~/.mozilla/firefox/plugins. Find the source of the link using ls -l; it will
look like /usr/java/jdk1.6.0_33/jre/lib/amd64/libnpjp2.so. Go to the directory starting
with jdk. It has a bin subdirectory, which contains the ControlPanel
application to run.
4. Make sure you approve the security popups!
The TCW applet puts up two security popups, which must be approved in order for the applet to work.
The SyMAP applet may or may not have security popups, depending how the administrator has
installed it.
5. Do you have enough applet memory?
If Java Applets are working from other websites, but not for TCW or SyMAP, chances are
the memory is insufficient. You may also see an explicit error message about memory.
Java applet memory is limited and you can raise the limit as follows:
First, open the Java Control Panel, as described above.
Then do the following:
On Linux or Windows:
- Select the Java tab.
- Click the View button under Java Applet Runtime Settings.
- For each row, click the Java Runtime Parameters column and enter -Xmx512m.
- Click the OK button to close the Control Panel.
- Restart your browser.
On MacOS:
- Go to the General tab
- You should see a list of Java versions. Select the top-most one, and click Options.
- Under Applet Runtime Parameters enter -Xmx512m.
- Click the OK button and close the Control Panel.
- Restart your browser.
6. If it still doesn't work
If the applet still doesn't work, you will need to contact us to help debug it.
Before doing this, you will need to turn on your Java Console display, which
shows debugging information; otherwise, we will not have any information to work with.
If you are already seeing this window (it displays a bunch of scrolling text) then
it is turned on. Otherwise do the following:
First, open the Java Control Panel, as described above.
In the Advanced tab, check the box "Show Console".
Click "OK", close the Control Panel, and restart your browser.
Restart the browser and try to run the applet. This time, if Java is running correctly,
you will see a text window as shown below. If the applet starts, but then crashes,
there will be error messages in the console window. You can use the "Copy" button
to copy all of the text and email it to us.