In My application i m getting error in tomcat server

[ch padmavathi]

[ERROR] HostConfig - Error deploying web application directory Flat1 <java.lang.
UnsupportedClassVersionError: Flat/action/FlatApplicationContext (Unsupported ma
jor.minor version 48.0)>java.lang.UnsupportedClassVersionError: Flat/action/Flat
ApplicationContext (Unsupported 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 org.apache.catalina.loader.WebappClassLoader.findClassInternal(Webapp
ClassLoader.java:1634)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoa
der.java:860)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1307)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1189)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.
java:978)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:87
6)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContex
t.java:4017)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4
337)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:823)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:80
7)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)

at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDep
loyer.java:277)
at org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.j
ava:701)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432
)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:349)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)

at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)

at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478
)
at org.apache.catalina.core.StandardService.start(StandardService.java:4
80)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:231
3)
at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
at java.lang.reflect.Method.invoke(Native Method)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)

[Jetendra Ivaturi]

Are you sure you have the classpath exactly, and the third party .jars if you are using to the exact path location.

[Rajkumar balakrishnan]

Don't do cross post as you already posted the same thing in the forum.
And as of your problem check the classpath and make sure that you have copied your JAR file to the proper directory. Check some documentation to clarify yourself with log4j which is available at apache's web site.