calling java from PERL

[SirCharles]

I'd like to invoke a java program from PERL. When I try to do this, I get following error:
Exception in thread "main" java.lang.NoClassDefFoundError

If I go to the dir that contains the source code and classes, it works fine. So, how to invoke the java program from a different directory?

 

[grega]

It depends on how your CLASSPATH environment variable is set. To run the java from any directory, add the full path to your java directory to your CLASSPATH. If you're on *nix, in ksh you can just do

export CLASSPATH=$CLASSPATH:/full/path/to/javaprogram

Greg.

 

[SirCharles]

I actually tried this already. Found same type of error occured. Following worked from PERL, but there ought to be something like what you're describing that's cleaner.
$runme = <<EORT;
cd /path/to/java/program
java javaProgram
EORT

`$runme`;


I've got another question on same subject. Not sure if I should post to this topic but here goes:
In order to access Oracle from java, do you have to use OC4J? Is there a sample Hello World program for accessing Oracle from java somewhere?

 

[sedj]

You want JDBC -

http://java.sun.com/developer/onlineTraining/Database/JDBC20Intro/JDBC20.html