Eclipse: Run => NoClassDefFoundError for an interface when loading a class implementing it

I had quite a hard time trying to run the following code in Eclipse (CollectionUserType implements UserType): Class.forName(“net.sf.hibernate.tap.CollectionUserType”); The problem was: Exception in thread “main” java.lang.NoClassDefFoundError: net/sf/hibernate/UserType    at java.lang.ClassLoader.findBootstrapClass(Native Method)    at java.lang.ClassLoader.findBootstrapClass0(ClassLoader.java:891)    at java.lang.ClassLoader.loadClass(ClassLoader.java:301)    at java.lang.ClassLoader.loadClass(ClassLoader.java:299)    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)    at java.lang.ClassLoader.loadClass(ClassLoader.java:251) The strange thing was that I could define instances of both UserType and CollectionUserType so

Redeploy an application (ear/war/…) on JBoss

A) Via JMX-console find jboss.system:service=MainDeployer invoke listDeployed – find something like: org.jboss.deployment.DeploymentInfo@d78e875f { url=file:/C:/jboss-3.2.3/server/default/deploy/tap.ear }   copy the url, go back and invoke Redeploy with the url (file:/C:/…) as the parameter. B) From the command line The operations that can be invoked via the JBoss JMX console can also be invoked by the cmd line

Access EJB on JBoss from outside

How to acces an enterprise java bean (EJB) running on JBoss from a standalone application running outside JBoss? In the code you must, among others: Set properties for a naming context and create one to be able to look the EJB up Authenticate by JBoss by means of JAAS To run the application: Set the