UnsupportedClassVersionError

[Akshay Kumar]

hi,
i'm a starter to jboss-4.0.0. could anyone make a way up by clearing this error. 'm trying to run a simple ejb with a Client.

 
C:\workplace>java -classpath C:\j2sdk1.4.2_03\jre\lib\jsse.jar;C:\jboss-4.0.0\server\default\deploy\StringProcessor.jar;c:\jboss-4.0.0\client\jboss-client.jar;c:\jboss-4.0.0\client\jnp-client.jar;c:\jboss-4.0.0\client\jboss-j2ee.jar;c:\jboss-4.0.0\client\jbossall-client.jar;. Client "my ejb"
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/jboss/logging/Logger (Un
supported major.minor version 48.0)
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at java.security.SecureClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.access$100(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClassInternal(Unknown Source)
        at org.jnp.interfaces.NamingContext.<clinit>(NamingContext.java:101)
        at org.jnp.interfaces.NamingContextFactory.getInitialContext(NamingContextFactory.java:
41)
        at org.jboss.naming.NamingContextFactory.getInitialContext(NamingContextFactory.java:34
)
        at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
        at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
        at javax.naming.InitialContext.init(Unknown Source)
        at javax.naming.InitialContext.<init>(Unknown Source)
        at Client.main(Client.java:25)

thanks.