classnotfoundexception

I'm trying to create a web service and deply it on Tomcat. I'm following this tutorial . I'm using Eclipse Europa. But when I try to start the server it returns this error: java.lang.ClassNotFoundException: org.apache.catalina.core.ThreadLocalLeakPreventionListener at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) at org.apache.tomcat.util.digester

Just created a brand new project with Eclipse June 4.2 Use Google App Engine SDK 1.7.4 Eclipse create a Servlet public class ClockServlet extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException { resp.setContentType("text/plain"); resp.getWriter().println("Hello, world"); } } and a simple web.xml <servlet> <servlet-name>Clock</servlet-name> <servlet-class>clock.ClockServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>Clock</servlet-name> <url-pattern>/clock</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file

Im using Neo4J OGM + Play Framework since 2 weeks succesfully, but today it doesn't work anymore. Every time I change something in my code, no matter if in a NodeEntity Class or in any other Class, it causes a java.lang.ClassNotFoundException when I try to get something from the database using the find method from org.neo4j.ogm.session.Session. Only if I clear the database and refill it I'm able to insert and get my NodesEntities. Java version: 1.8 Scala version: 2.11.7 Sbt version: 2.6.3 build.sbt : libraryDependencies += "org.neo4j" % "neo4j-ogm-core" % "3.0.0-RC1" libraryDependencies +=

I'm migrating an application from JBoss 6.1.0 JBoss EAP 4.2.xa. I know I have changed many things, one of the most important is that JBoss now includes most of the framework / most used libraries (modules), which is great (war files smaller). Now, I have two applications, both mounted with Spring / CXF and Maven2. One exposes a web services and the second for the first client. The problem is in the client application, at runtime, when I try to instantiate the proxy web service I get the following error: ------ java.lang.NoClassDefFoundError: org/apache/cxf/jaxws/JaxWsProxyFactoryBean at es...

This is my first Java application and I'm completely inexperienced with Java and NetBeans . I have been trying to connect to sql and get some records for 2 days. The problem is about jdbc driver, let me explain. I have downloaded sqljdbc driver and then followed these steps: Right-click Project->Select Properties->On the left-hand side click Libraries->Under Compile tab - click Add Jar/Folder button and select sqljdbc4.jar file. Then it should be ok, right? Then I wrote this code But I cant get rid of this exception: Exception in thread "main" java.lang.ClassNotFoundException: com.microsoft

My code compiled fine with the following command: javac -cp "../lib/*" AvroReader.java (lib is where i put my jar files) At run time I get a ClassNotFoundException on the following line: DatumReader<?> dtmrdr = new GenericDatumReader(); It says it can't find org.apache.avro.generic.GenericDatumReader even though I've imported it. Why this is happening? Thanks! Importing has nothing to do with loading classes or setting CLASSPATH. Try this: java -cp .;../lib/* Generator Using the dot '.' as the first entry in the CLASSPATH assumes that the Generator.class file exists in the directory from which

Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/impl/client/DefaultHttpClient I am not able to resolve below error : Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/impl/client/DefaultHttpClient; at com.medicend.jykra.medicend.Async.Parser.LoginParser.hitWS(LoginParser.java:68) at com.medicend.jykra.medicend.Async.Parser.LoginParser.postData(LoginParser.java:50) at com.medicend.jykra.medicend.Activity.SignInActivity$LoginAsync.doInBackground(SignInActivity.java:91) at com.medicend.jykra.medicend.Activity.SignInActivity