在Netbeans中使用Derby EmbeddedDriver

Question

I'm having troubl using Derby in a netbeans project on Windows. I've just downloaded and configured Derby and set the CLASSPATH variable to

C:\Apache\db-derby-10.10.1.1-bin\lib\derby.jar;C:\Apache\db-derby-10.10.1.1-bin\lib\derbytools.jar;

When I run the command

java org.apache.derby.tools.sysinfo

everything is as expected, I get the output

------------------ Java Information ------------------
Java Version:    1.7.0_25
Java Vendor:     Oracle Corporation

etc.

Now when I run a java program that uses derby straight from the command prompt everything works fine:

>java program

but when I try to run the exact same program from Netbeans I get the following error

ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
>>> Please check your CLASSPATH variable   <<<

Why would the driver be working from the command prompt but not from Netbeans? Are there special settings in Netbeans that I'm missing or something?

Answer 1

I've figured it out - you need to add the Derby jar files as libraries in the project properties too:

Right click on project, select project properties, select libraries then 'add JAR/folder'. Navigate to where the derby libraries are (in my case C:\\Apache\\db-derby-10.10.1.1-bin\\lib) then add derby.jar and derbytools.jar to the compile-time libraries.