i have developed an application using tomcat5.0.28. when i try to execute it it was shoing the following exception

javax.servlet.ServletException: Error allocating a servlet instance org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)开发者_StackOverflow中文版 org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) java.lang.Thread.run(Thread.java:534)

root cause

java.lang.UnsupportedClassVersionError: Catalog1 (Unsupported major.minor version 49.0) java.lang.ClassLoader.defineClass0(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:537) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1634) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:860) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1307) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) java.lang.Thread.run(Thread.java:534)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

The line Unsupported major.minor version 49.0 gives the hint that you compiled your code with a java 6 compiler but you use java 5 to run tomcat.