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POI'm having problems with my first servlet
 

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    <p>This is the code to my servlet...</p> <pre><code>import java.io.*; import javax.servlet.*; import javax.servlet.http.*; public class HelloWorld extends HttpServlet { private String message; public void init(){ message="Hello World"; } public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("&lt;h1&gt;"+message+"&lt;/h1&gt;"); } public void destroy(){ } } </code></pre> <p>I'm using xampp's tomcat 7</p> <p>and this is my web.xml file</p> <pre><code>&lt;web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0" metadata-complete="true"&gt; &lt;servlet&gt; &lt;servlet-name&gt;HelloWorld&lt;/servlet-name&gt; &lt;servlet-class&gt;HelloWorld&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;HelloWorld&lt;/servlet-name&gt; &lt;url-pattern&gt;/HelloWorld&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; </code></pre> <p></p> <p>My web.xml is in %TOMCAT_HOME%/webapps/ROOT/WEB_INF directory and my HelloWorld.class is in %TOMCAT_HOME%/webapps/ROOT/WEB_INF/classes directory.</p> <p>when I try to run my file from my browser I type</p> <p><code>http://localhost:8080/HelloWorld</code></p> <p>in the addressbar and the following Servlet exception shows up</p> <pre><code>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 HelloWorld org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) java.lang.Thread.run(Thread.java:724) root cause java.lang.NoClassDefFoundError: HelloWorld (wrong name: com/HelloWorld/HelloWorld) java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:752) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2820) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1150) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) java.lang.Thread.run(Thread.java:724) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.21 logs. </code></pre> <p>Please suggest a method to run my app properly...</p>
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    1. USSabre.Tooth
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    1. COit seems like you forgot to add the ServletException
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    2. COWhich SErvletException?
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    3. COIt was a large page with a lot of errors somehow I wasn't able to post it here.Stack Overflow would keep giving error of indentation even though I took care of it.
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