noclassdeffounderror

So I just created a new GAE project in Eclipse Indigo using the Google Eclipse Plugin, and I only have the following servlet: public class TestServlet extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException { resp.setContentType("text/plain"); resp.getWriter().println("Hello, world"); Objectify obj = ObjectifyService.begin(); System.out.println(obj); } } But when I run the servlet on my browser I get: java.lang.NoClassDefFoundError: com/googlecode/objectify/ObjectifyService at com.fer.TestServlet.doGet(TestServlet.java:17) at javax.servlet

I'm trying Hadoop's Basic MapReduce Program whose tutorial is on http://java.dzone.com/articles/hadoop-basics-creating The Full code of the class is(the code is present on net on above url) import java.io.IOException; import java.util.StringTokenizer; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.IntWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.Mapper; import org.apache.hadoop.mapreduce.Reducer; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;

I am trying to reference a pure java-Project in my Android-Project -> The Java-Project has a whole bunch of classes I need to use. Oh, and as the first response pointed out: I am using eclipse, yes :) Only Problem is: I Always get Could not find class 'XXX', referenced from method com.example.helloworld.MainActivity.onCreate. I seem to have missed SOME step or error...? What I already did: The Project is added as Project into the Java Build Path (logically nessecary) It is marked in "Order and Export" in the Java Build Path and pushed to the top (this solved the problem for someone else here

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

I have an external jar file(have package structure), which contains the main class, and I can run the app from command line like this: java -jar example.jar But I still have another test.class file outside this jar file, and some classes inside this jar file will invoke the methods in test.class . How can I specify the test.class file to be used by jar file in command line? Tried many ways, always show: NoClassDefFoundError for test.class NB: the test.class file also use class files in example.jar file, has its own package structure. I know I can put them together in one jar file,

I am facing issues while using enum in my J2EE application. I am using enum in a switch case inside my stateless service bean. During runtime I see following exception on switch statement: Caused by: java.lang.NoClassDefFoundError: com/comp/service/TestServiceImpl$1 This issue has been extensively discussed on one of the thread on SO . But I do not see any solution mentioned to resolve this issue. In my case I use JBOSS EAP6.1 server. JDK version is 1.7. Code is built using Maven in Eclipse IDE. And application is deployed as EAR archive. How do I add this extra generated class file in

I want to get the data from a HTTP Post, so in servlet I am implementing doPost like following package PostHandler; import java.io.IOException; import java.util.Enumeration; import java.util.Properties; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import kafka.producer.ProducerConfig; import kafka.javaapi.producer.ProducerData; @WebServlet(description = "This is to handle the posted data on HTTP", urlPatterns = { "