Accessing class in jar

[Darryl Failla]

I have jar file(app.jar) with an application that references a class in another jar file(support.jar). Both jar files are in appfolder. In order to run it from the command line, I run:

c:\appfolder>java -classpath c:\appfolder\support.jar -jar app.jar

I keep getting NoClassDefFoundError referencing the class in support.jar. What am I missing here?

[Roger Chung-Wee]

If you use the -jar option, java.exe will silently ignore the classpath and only look inside app.jar. One solution is to add support.jar to the manifest Class-Path.

[Jesper de Jong]

For the details, see: The Java Tutorials - Packaging Programs in JAR Files