Question

I wrote Test.java to test out a database connection.

I compiled using successfully using “javac Test.java.”

But, I can’t run my program using “java -cp …”

>AssetMgmtDbTest me$ pwd
/Users/me/Workspace/tmp/AssetMgmtDbTest
>AssetMgmtDbTest me$ ls
Test.class  Test.java   classes12.jar   ojdbc6.jar
>AssetMgmtDbTest me$ java -cp ojdbc6.jar Test
Exception in thread "main" java.lang.NoClassDefFoundError: Test
Caused by: java.lang.ClassNotFoundException: Test
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

Please advise.

Thanks,
Kevin

Answer 1

Add the current directory to your classpath:

>AssetMgmtDbTest me$ java -cp ojdbc6.jar:. Test

Note the additional :. (colon + dot) after the jar.

If you start using packages, things will get more complicated because the directory structure is important. Please refer to this answer for details.