Cannot compile server on RHEL

[pixelpusher]

When I try on RHEL 6.2, I get a pile of errors that begin with:

    [javac] /home/admin/Projects/worldwind/src/gov/nasa/worldwindx/examples/applet/WWJApplet.java:18: package netscape.javascript does not exist
    [javac] import netscape.javascript.JSObject;

I do have the real java JDK installed on my computer. So I thought I should have everything necessary to build this thing, but I'm obviously missing something. Any ideas, plz?

[nlneilson]

On Ubuntu and using Eclipse it builds OK.
Java is run time compiled.