[jboss-user] [Beginners Corner] - Re: java.lang.NoClassDefFoundError exception when starting 4

Look again at what you downloaded: jboss-4.2.3.GA-jdk6.zip This download for 4.2.3 is targeted for JDK6. However, you are using JDK5: 12:07:43,171 INFO [ServerInfo] Java version: 1.5.0_16,Sun Microsystems Inc. 12:07:43,171 INFO [ServerInfo] Java VM: Java HotSpot(TM) Server VM 1.5.0_16-b02,Sun Microsystems Inc. You need to either download the regular 4.2.3 zip file, or install and use JDK6. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4177709#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...