ant startdb results in NoClassDefFoundError

howdoi · **Joined:** Tue Feb 19, 2008 2:30 pm **Posts:** 10

Hibernate version: 3.2
Name and version of the database you are using: HSQLDB

I have downloaded the Hibernate HelloWorld code. When I run ant startdb, I get a NoClassDefFoundError exception. Please help me figure out what could I be doing wrong! From the ant output, looks llike the program is looking for server.properties file, which does not exist.

Thank you!

Full stack trace of any exception that occurs:
[delete] Deleting directory C:\!downloads\Hibernate\jpwh-gettingstarted-070401\helloworld-native\database
[java] [Server@186db54]: [Thread[main,5,main]]: checkRunning(false) entered
[java] [Server@186db54]: [Thread[main,5,main]]: checkRunning(false) exited
[java] [Server@186db54]: Startup sequence initiated from main() method
[java] [Server@186db54]: Loaded properties from [C:\!downloads\Hibernate\jpwh-gettingstarted-070401\helloworld-native\server.properties]
[java] [Server@186db54]: Initiating startup sequence...
[java] [Server@186db54]: Server socket opened successfully in 20 ms.
[java] Exception in thread "HSQLDB Server @186db54" java.lang.NoClassDefFoundError
[java] at org.hsqldb.Database.reopen(Unknown Source)
[java] at org.hsqldb.Database.open(Unknown Source)
[java] at org.hsqldb.DatabaseManager.getDatabase(Unknown Source)
[java] at org.hsqldb.DatabaseManager.getDatabase(Unknown Source)
[java] at org.hsqldb.Server.openDatabases(Unknown Source)
[java] at org.hsqldb.Server.run(Unknown Source)
[java] at org.hsqldb.Server.access$000(Unknown Source)
[java] at org.hsqldb.Server$ServerThread.run(Unknown Source)

howdoi · **Joined:** Tue Feb 19, 2008 2:30 pm **Posts:** 10

I had JDK1.5.0_01 installed previously. I now installed JDK1.6.0_06. Now when I execute:

Code:

java -cp hsqldb.jar org.hsqldb.Server

, the HSQL Database Server starts fine.

However, when I run:

Code:

ant startdb

, I still get the same NoClassDefFound error message.

Please advise! Thank you.

howdoi · **Joined:** Tue Feb 19, 2008 2:30 pm **Posts:** 10

When I changed the PATH and JAVA_HOME environmental variables to point to the new JDK (1.6.0_06), the error messages disappeared.

So, the bottom line is, HSQLDB as well as some Hibernate packages are not compatible with JDK1.5 and needed JDK1.6. Please correct me if I am wrong.

sanne.grinovero · **Posted:** Sat Apr 26, 2008 5:04 am

of course they are compatible with JDK1.5,
you probably had some mismatch with PATH and JAVA_HOME versions