Java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver

Hi everyone,
Can any one plz help me with this problem in connection with the database...im unable to connect from the servlet where my jdbc connectivity code is written when i compile it gives me this error:
Ljava.lang.String;@e53220java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1352)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1198)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:164)
     at shoppingcart.shoppingcartservlet.doit(shoppingcartservlet.java:83)
     at shoppingcart.shoppingcartservlet.doPost(shoppingcartservlet.java:30)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
     at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
     at java.lang.Thread.run(Thread.java:595)

Hi
The server is not able to load the jdbc driver path. Place your driver in server classpath
Venkat

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    user = user.substring(0, slash_index);
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    Please don't cross post.
    http://forum.java.sun.com/thread.jsp?thread=541572&forum=57&message=2625798
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    Hi there Masters
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         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
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         ... 10 more
    =====================JAVA CODE====================================
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    import java.sql.*;
    import oracle.jdbc.*;
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    Fail to make OCI connection Using JDeveloper

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