classnotfoundexception

I am creating simple servlet and deploying it in tomcat server but I am getting the following error: HTTP Status 500 - Error instantiating servlet class pkg.coreServlet File Structure on the tomcat server: webapps | - aarya | - WEB-INF | -web.xml -src(folder) | -pkg | -coreServlet.class web.xml: <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <servlet> <servlet-name>aaryaservlet</servlet

I tried this code in my Netbeans 7.4 and it works without problem import java.io.IOException; import java.net.URL; import javax.net.ssl.HttpsURLConnection; public class JavaApplication148 { public static void main(String[] args) throws IOException { URL url = new URL("https://redmine.ackee.cz/time_entries.xml"); HttpsURLConnection httpCon = (HttpsURLConnection) url.openConnection(); } } However then I used it in eclipse in my maven-driven project and it throws following exception : java.lang.ClassCastException: com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnectionOldImpl cannot be

I am trying to use H2 to connect to a database in Java (using Eclipse as the IDE). The sample does (below) throws a ClassNotFoundException . The thing is, I did add the h2 jar file to the system CLASSPATH. I have even checked it's there several times via printenv in the console. Am I omitting a step? CODE: import java.sql.*; public class Program { /** * @param args */ public static void main(String[] args) throws Exception{ try{ System.out.println("hello, world!"); Class.forName("org.h2.Driver"); Connection conn = DriverManager.getConnection("jdbc:h2:~/testdb", "sa", ""); // add application

The code below generates an error using Guice 2.0. With Guice 1.0 everything is fine. The JDK is Java 6 update 15. public class App { public static void main(String[] args) { Guice.createInjector(new AbstractModule() { @Override protected void configure() { // just testing } }); } } The error is: Exception in thread "main" java.lang.NoClassDefFoundError: [Lorg/aopalliance/intercept/MethodInterceptor; at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2427) at java.lang.Class.getDeclaredMethods(Class.java:1791) at com.google.inject

Setup: Eclipse Juno R, Tomcat 7.0.8, tomcat run through eclipse plug in. Tomcat launch configuration from eclipse has VM argument -Djava.util.logging.config.file="C:\WS\Serverlogs\tomcat7\conf\logging.properties" (Ref: Where can I view Tomcat log files in Eclipse? ) Getting following error. Can't load log handler "1catalina.org.apache.juli.FileHandler" java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at