Applet fails to render

Question

Developing an applet based on java sound demo. Signing, certs, client access all working great MOST of the time. Issue: sometimes, after clicking yes on the cert dialog, the applet comes up blank(grey- the bgcolor). No error is shown in the plugin console so I am left to think it may be an issue with request time-out, but just guessing as there is seemingly no way to debug. Sure would like a tip from the Duke.
all help appreciated.
Mike D.
HormannAmerica, Inc.

Answer 1

Enable a full trace and check that out.
Put some System.out.prinln in your code to see where your code hangs, since
it doesn't produce an exception it probably has some blocking code. (like
reading from a socket that doesn't produce any data and isn't closed by the
sender)
Or you cought an exception without printing the stacktrace.
To turn the full trace on (windows) you can start the java console, to be found here:
C:\Program Files\Java\j2re1.4...\bin\jpicpl32.exe
In the advanced tab you can fill in something for runtime parameters fill in this:
-Djavaplugin.trace=true -Djavaplugin.trace.option=basic|net|security|ext|liveconnect
if you cannot start the java console check here:
C:\Documents and Settings\userName\Application Data\Sun\Java\Deployment\deployment.properties
I think for linux this is somewhere in youruserdir/java (hidden directory)
add or change the following line:
javaplugin.jre.params=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
for 1.5:
deployment.javapi.jre.1.5.0_03.args=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
The trace is here:
C:\Documents and Settings\your user\Application Data\Sun\Java\Deployment\log\plugin...log
I think for linux this is somewhere in youruserdir/java (hidden directory)
Print out the full trace of the exception:
try{...}catch(Exception e){e.printStackTrace();}