Java application stops working and giving exception
<p>Actually I have made a locally set up of one java application in tomcat and that time its working fine but after one month its again giving below error without changing any code.</p>

<pre><code>javax.servlet.ServletException: Servlet.init() for servlet action threw exception
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
    org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
    org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
    org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
    org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
    org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
    java.lang.Thread.run(Thread.java:595)
</code></pre>

<p>root cause </p>

<pre><code>java.lang.NoClassDefFoundError
    com.lexmark.efoundations.lxpd.gui.struts.ActionServlet.init(Unknown Source)
    javax.servlet.GenericServlet.init(GenericServlet.java:212)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
    org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
    org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
    org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
    org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
    org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
    java.lang.Thread.run(Thread.java:595)
</code></pre>

<p>I have also check that the mention class "com.lexmark.efoundations.lxpd.gui.struts.ActionServlet" is present in proper place.</p>
