classnotfoundexception

I get the following exception when i try to run the applet : load: class MyApplet not found. java.lang.ClassNotFoundException: MyApplet at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source) at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun

I followed the instructions indicated in other threads on how to import external libraries, but after importing android-support-v7-appcompat.jar into the Referenced Libraries of my Android project (in ADT v.22.0.5) I get java.lang.ClassNotFoundException: import android.os.Bundle; import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarActivity; import android.view.Menu; public class MainActivity extends ActionBarActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ActionBar

I have a Hello World servlet in webapps/hello/WEB-INF/class/HelloServlet.class and I registered it as below in web.xml : <servlet> <servlet-name>helloServlet</servlet-name> <servlet-class>HelloServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>helloServlet</servlet-name> <url-pattern>/HelloServlet</url-pattern> </servlet-mapping> However, Tomcat failed to start with the below exception: Apr 30, 2012 1:50:10 PM org.apache.catalina.core.ApplicationContext log INFO: Marking servlet HelloServlet as unavailable Apr 30, 2012 1:50:10 PM org.apache.catalina.core.ApplicationContext log

I am running my app on google app engine. All I have is a simple servlet that is trying to use Jsoup. However when I run the application I get java.lang.ClassNotFoundException: org.jsoup.Jsoup. I am using Eclipse so I added the jsoup jar file in the Java Build Path -> Libraries You need to put the Jsoup JAR file in the /WEB-INF/lib folder of the webapp. That folder is covered by webapp's default classpath. Also, Eclipse will automagically put all libraries in /WEB-INF/lib folder in the buildpath of the project, you shouldn't need to do that manually. Of course I assume that the project is been

android.view.WindowInsets is added in API level 20. I import android.view.WindowInsets in my CustomLayout and override onApplyWindowInsets(WindowInsets insets) , but ClassNotFoundException occurs in some phones, whose api level are from 14 to 21. What is the reason? Occurred on: Rooted Nexus 5, Android 4.4.2 Stack trace: Fatal Exception: java.lang.NoClassDefFoundError: android/view/WindowInsets at java.lang.Class.getDeclaredMethods(Class.java) at java.lang.Class.getDeclaredMethods(Class.java:656) at android.view.ViewDebug.getExportedPropertyMethods(ViewDebug.java:960) at android.view.ViewDebug

i recently updated from GWT 2.0.4 to 2.1.0. Since then I cannot compile my GWT application anymore. When I click on the GWT compile button of the GWT eclipse plugin I get the following error: java.lang.NoClassDefFoundError: com/google/gwt/dev/Compiler Caused by: java.lang.ClassNotFoundException: com.google.gwt.dev.Compiler at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader