It seems that you don't have the Servlet API on your classpath upon compilation. If you're using Maven, make sure that you put the servlet api dependency on the pom.xml with a scope = compile. This will include the servlet api on compilation, but exclude it on the deployment.
We need to exclude it, since Jetty (I assumed you are using Jetty here) already has a servlet api. Thanks, On Tue, Aug 20, 2013 at 8:06 AM, Muhammad Bashir Al-Noimi <mbno...@gmail.com > wrote: > Howdy, When I tried to run GWT quick start > tutorial<http://www.gwtproject.org/usingeclipse.html>I got this error message! > > How can I fix this issue? > > > - I already installed GWT Developer plugin for Firefox 1.23 > - I installed eclipse from ubuntu 13.04 repository (version 3.8.1) > - I already GWT from ubuntu 13.04 repository (version 2.4.0) > > > 02:00:37.373 [ERROR] [hellostupid] Exception initializing module > > java.lang.NullPointerException: null > at > com.google.gwt.dev.javac.JsniChecker.getSuppressedWarnings(JsniChecker.java:565) > at > com.google.gwt.dev.javac.JsniChecker$JsniDeclChecker.visit(JsniChecker.java:135) > at > org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1233) > at > org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:679) > at com.google.gwt.dev.javac.JsniChecker.check(JsniChecker.java:615) > at com.google.gwt.dev.javac.JsniChecker.check(JsniChecker.java:559) > at > com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:83) > at > com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:251) > at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:464) > at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:710) > at > com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:235) > at > com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:447) > at > com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:370) > at > com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:360) > at > com.google.gwt.dev.DevModeBase$UiBrowserWidgetHostImpl.createModuleSpaceHost(DevModeBase.java:110) > at > com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:197) > at > com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:525) > at > com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363) > at java.lang.Thread.run(Thread.java:724) > > > > The project was not built since its build path is incomplete. Cannot find the > class file for javax.servlet.http.HttpServletResponse. Fix the build path > then try building this project HelloStupid Unknown Java > Problem > The type javax.servlet.http.HttpServletResponse cannot be resolved. It is > indirectly referenced from required .class files GreetingServiceImpl.java > /HelloStupid/src/com/example/hello/server line 1 Java Problem > > > -- > Best Regards, > Muhammad Bashir Al-Noimi > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to google-web-toolkit+unsubscr...@googlegroups.com. > To post to this group, send email to google-web-toolkit@googlegroups.com. > Visit this group at http://groups.google.com/group/google-web-toolkit. > For more options, visit https://groups.google.com/groups/opt_out. > -- *Alvin P. Reyes*, Oracle Certified Professional Software Engineer Blog: http://www.alvinjayreyes.com -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/groups/opt_out.
