dear friend i tried a lot of solution but all in vain
the full trace of the problem is following
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error instantiating servlet class controler
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379)
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:281)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:357)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1671)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
java.lang.Thread.run(Thread.java:619)
root cause
java.lang.ClassNotFoundException: controler
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1672)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1517)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379)
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:281)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:357)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1671)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
java.lang.Thread.run(Thread.java:619)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.4 logs.
i tried different versions of tomact from 5.5 to 7.0.29 but all of them is giveing the same error as mentioned above
please help me.