[ultrapod]

i am having a hell of a time getting my classpath problems sorted out. i've downloaded the oracle JDBC thin client for java 2 as a zip file (classes12.zip) and i'm trying to build an app that uses said library, which i have put in "/Users/me/Library/Java". i have set up a classpath environment variable read from "/Users/me/Library/init/tcsh/environment.mine" per the "/usr/share/init/tcsh/README" file instructions. when i type "env" in the terminal shell, i get:

CLASSPATH=/Users/me/Library/Java

so i'm pretty sure that's working okay.

i've set up a project builder project using the java application stationery and added "classes12.zip" to the "Frameworks & Libraries" list under the "Files & Build Phases" tab in my current target settings.

the project compiles great.

when i try to execute the following line of code in the debugger:

"DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());"

i get an exception:

"Exception occurred during event dispatching:
java.lang.NoClassDefFoundError: oracle/jdbc/driver/OracleDriver"

and a stack trace.

what have i done wrong? where else could i set the classpath variable?

also, i am getting an identical NoClassDefFoundError exception when JEdit (which is otherwise working fantastically) tries to load the Oracle plugin, which has a dependency on the same library, even when i launch it from the command line explicitly specifying the classpath thusly:

"java -cp /Users/me/Library/Java -jar jedit.jar"

this is really making me mental. any input/suggestions would be greatly appreciated!


[This message has been edited by ultrapod (edited 04-04-2001).]

[bashyal]

If you're building stuff from PB, you need to set your classpath added to the properties file in there. If you have more than one, separate them using : It doesn't look at your environment variable. They are per terminal session.

Hope that helps.

[ultrapod]

okay:
"com.apple.mrj.application.classpath = Contents/Resources/Java/Employee.jar:/Users/me/Library/Java/"

does *not* work.

but this does:
"com.apple.mrj.application.classpath = Contents/Resources/Java/Employee.jar:/Users/me/Library/Java/classes12.zip"

woohoo! but why? i thought the point of the classpath was that i didn't need to specify the .zip or .jar explicitly....

interestingly enough, however:

"[chromo:~/Applications/JEdit] me% java -cp /Users/me/Library/Java/classes12.zip -jar jedit.jar &
[1] 606
[chromo:~/Applications/JEdit] me% [error] Error while starting plugin OraclePlugin
[error] java.lang.NoClassDefFoundError: oracle/jdbc/driver/OracleDriver
[error] at OraclePlugin.start(OraclePlugin.java:73)
[error] at org.gjt.sp.jedit.EditPlugin$JAR.addPlugin(EditPlug in.java:136)
[error] at org.gjt.sp.jedit.JARClassLoader.loadPluginClass(JA RClassLoader.java:236)
[error] at org.gjt.sp.jedit.JARClassLoader.loadAllPlugins(JAR ClassLoader.java:170)
[error] at org.gjt.sp.jedit.jEdit.main(jEdit.java:303)
"

the problem here persists! argh! so close - thanks for your tip...


[This message has been edited by ultrapod (edited 04-04-2001).]

[DaGuy]

I had similar problems in the past. It could be that a jar file is also
a containier of classes and as such may qualify as a directory -but what the heck do I know, anyway.

For quick hassle free builds your best best is the command line with some
useful aliases for the classpaths.