OWS + Eclips 1.8.0_422 Trying to replace Oracle, jnlp fails to launch with class error

[GuyWithQuetions]

Greetings-
I'm not a java dev. I'm simply trying to use an open source option to replace Oracle for an aged app that we need to keep alive for another year or so. Currently it works fine with Oracle Java 8. I would love to hear any suggestions anyone may have. Other forum posts seem to indicate that we are missing a plugin, but we also do not have that plugin when Oracle is installed, as far as I know.

It appears to load/download well until it reaches to the remote provider:
/name/netscape/javascript/JSException.class, where it then immediately throws:
[ERROR][net.sourceforge.jmlp.Launcher]
java.lang.NoClassDefFoundError: netscape/javascript/JSException

Tries a little more, throws the exception again, fails several loads and dies:

[Janak Mulani]

Which version of OWS are you using? Can you please attach the OWS logs? Which JREhave you specified in your Jnlp file to run the application?

[GuyWithQuetions]

OWS 1.10.1 x64 with Eclipse Temurin JRE with Hotspot 8u422-b05

See attached, thank you!

[Janak Mulani]

You are trying to run an applet : <applet-desc ...> as specified in your jnlp file .

Log file has: [ITW-CORE][2024-08-22 14:12:41.057 EDT][DEBUG][net.sourceforge.jnlp.Launcher] Launching Applet

OWS does not support applets.

You will have to convert your applet to a Java Application.

[GuyWithQuetions]

Oh. Thank you. I apologize I missed your answer before this. This is not our application, so I believe this means we are dead in the water.

Thank you!

[Janak Mulani]

Please talk to the vendor if possible. It should not be difficult to migrate an applet to an application.