I am guessing the class hk/com/carfield/core/Context is performing a restricted operation - like creating a thread or opening a file/socket connection. GAE does not allow you to perform such operations, and when you do - it fails with a stack trace similar to what you have pasted.
Disable GAE in your eclipse settings, and completely remove all GAE jar files from your classpath. That should solve the problem. --Sri On 11 May 2010 22:48, Carfield Yim <[email protected]> wrote: > HI, I just use the class in another JAR, eclipse show no compilation > error, and GWT compilation is success, why I still get following > error? BTW, I start the application using eclipse GWT plugin. > > May 11, 2010 5:17:36 PM com.google.apphosting.utils.jetty.JettyLogger > warn > WARNING: Nested in javax.servlet.ServletException: init: > java.lang.NoClassDefFoundError: hk/com/carfield/core/Context > at > > hk.com.carfield.server.InternetfolderServiceImpl.<init>(InternetfolderServiceImpl.java: > 27) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java: > 57) > at > > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java: > 45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:532) > at java.lang.Class.newInstance0(Class.java:372) > at java.lang.Class.newInstance(Class.java:325) > at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153) > at > org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java: > 339) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 463) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1093) > at > > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java: > 121) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: > 360) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: > 216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: > 181) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: > 712) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 405) > at > > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java: > 70) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:352) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 506) > at org.mortbay.jetty.HttpConnection > $RequestHandler.content(HttpConnection.java:844) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: > 396) > at org.mortbay.thread.BoundedThreadPool > $PoolThread.run(BoundedThreadPool.java:442) > Caused by: java.lang.ClassNotFoundException: > hk.com.carfield.core.Context > 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:319) > at > > com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java: > 151) > at java.lang.ClassLoader.loadClass(ClassLoader.java:264) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332) > ... 34 more > May 11, 2010 5:17:36 PM com.google.apphosting.utils.jetty.JettyLogger > warn > WARNING: Nested in javax.servlet.ServletException: init: > java.lang.NoClassDefFoundError: hk/com/carfield/core/Context > at > > hk.com.carfield.server.InternetfolderServiceImpl.<init>(InternetfolderServiceImpl.java: > 27) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java: > 57) > at > > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java: > 45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:532) > at java.lang.Class.newInstance0(Class.java:372) > at java.lang.Class.newInstance(Class.java:325) > at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153) > at > org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java: > 339) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 463) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1093) > at > > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java: > 121) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: > 360) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: > 216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: > 181) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: > 712) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 405) > at > > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java: > 70) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:352) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 506) > at org.mortbay.jetty.HttpConnection > $RequestHandler.content(HttpConnection.java:844) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: > 396) > at org.mortbay.thread.BoundedThreadPool > $PoolThread.run(BoundedThreadPool.java:442) > May 11, 2010 5:17:36 PM com.google.apphosting.utils.jetty.JettyLogger > warn > WARNING: /gtwinternetfolder/internetfolder > java.lang.NoClassDefFoundError: hk/com/carfield/core/Context > at > > hk.com.carfield.server.InternetfolderServiceImpl.<init>(InternetfolderServiceImpl.java: > 27) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java: > 57) > at > > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java: > 45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:532) > at java.lang.Class.newInstance0(Class.java:372) > at java.lang.Class.newInstance(Class.java:325) > at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153) > at > org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java: > 339) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 463) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1093) > at > > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java: > 121) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: > 360) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: > 216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: > 181) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: > 712) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 405) > at > > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java: > 70) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:352) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 506) > at org.mortbay.jetty.HttpConnection > $RequestHandler.content(HttpConnection.java:844) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: > 396) > at org.mortbay.thread.BoundedThreadPool > $PoolThread.run(BoundedThreadPool.java:442) > May 11, 2010 5:17:36 PM com.google.apphosting.utils.jetty.JettyLogger > warn > WARNING: /gtwinternetfolder/internetfolder > java.lang.NoClassDefFoundError: hk/com/carfield/core/Context > at > > hk.com.carfield.server.InternetfolderServiceImpl.<init>(InternetfolderServiceImpl.java: > 27) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java: > 57) > at > > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java: > 45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:532) > at java.lang.Class.newInstance0(Class.java:372) > at java.lang.Class.newInstance(Class.java:325) > at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153) > at > org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java: > 339) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 463) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1093) > at > > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java: > 121) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1084) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: > 360) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: > 216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: > 181) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: > 712) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 405) > at > > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java: > 70) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:352) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 506) > at org.mortbay.jetty.HttpConnection > $RequestHandler.content(HttpConnection.java:844) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: > 396) > at org.mortbay.thread.BoundedThreadPool > $PoolThread.run(BoundedThreadPool.java:442) > Caused by: java.lang.ClassNotFoundException: > hk.com.carfield.core.Context > 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:319) > at > > com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java: > 151) > at java.lang.ClassLoader.loadClass(ClassLoader.java:264) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332) > 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