Jboss AS 7 and JDK 5

[sammie88]

Hi,

I have an ejb client jar that I compiled using JDK 5 because we are using a WebServer with JDK 5.  The client side is trying to communicate to JBoss 7 via ejb remote. The server ejb jar is compiled with 1.6 since that is what JBoss 7 uses and is deployed without any errors.  I get an error though on the client side when doing an ejb lookup.  Is it possible to have a client with 1.5 communicating to JBoss AS7. Jboss-client.jar is also on the client side.  Is this compatible with 1.5? Thanks!

java.lang.UnsupportedClassVersionError: Bad version number in .class file

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:620)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)

at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1717)

at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:983)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1431)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1301)

at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:242)

at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:50)

at com.sun.naming.internal.ResourceManager.getFactory(ResourceManager.java:371)

at javax.naming.spi.NamingManager.getURLObject(NamingManager.java:575)

at javax.naming.spi.NamingManager.getURLContext(NamingManager.java:533)

at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:279)

at javax.naming.InitialContext.lookup(InitialContext.java:351)

[jaikiran]

You'll need Java 6 on the client too. EJB client and various other libraries that are used, all require Java 6

[sammie88]

Thanks Jaikiran. I was afraid of this- my client is on sun webserver 6.1 which at

best uses jdk5. Is there any other workaround other than upgrading the sun webserver to one that uses kdk6?

Thanks!

[ctomc]

sammie88 wrote:

Thanks Jaikiran. I was afraid of this- my client is on sun webserver 6.1 which at

best uses jdk5. Is there any other workaround other than upgrading the sun webserver to one that uses kdk6?

Thanks!

I think only other way would be to expose your ejb via webservices (@WebService) and then consume them on your jdk6 server.

--

tomaz

[sammie88]

thanks tomaz-ii havent tried doing a webservice yet but would this

eliminate the use of jboss- client. jar on d client side? thanks!

[wdfink]

If you use webservice for communication you do not need the JBoss client API. There is no need to have the jboss-client.jar in this case.

[sammie88]

Thanks Wolf!