Am experimenting HelloMVP sample code given at http://code.google.com/webtoolkit/doc/latest/DevGuideMvpActivitiesAndPlaces.html
in my own project using GWT 2.2M1. (i just copy/pasted the code, with no modification) Now am struck at following err (getting both in dev mode and compile mode, in case) Compiling module com.app.AppHome Resolving com.app.client.mvp.AppPlaceHistoryMapper Found type 'com.app.client.mvp.AppPlaceHistoryMapper' [ERROR] Annotation error: cannot resolve com.app.client.place.HelloPlace$Tokenizer java.lang.ClassNotFoundException: com.app.client.place.HelloPlace$Tokenizer at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(TypeOracleMediator.java:727) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(TypeOracleMediator.java:666) at com.google.gwt.dev.javac.TypeOracleMediator.createAnnotation(TypeOracleMediator.java:469) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotation(TypeOracleMediator.java:625) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotations(TypeOracleMediator.java:640) at com.google.gwt.dev.javac.TypeOracleMediator.resolveClass(TypeOracleMediator.java:786) at com.google.gwt.dev.javac.TypeOracleMediator.addNewTypes(TypeOracleMediator.java:411) at com.google.gwt.dev.javac.TypeOracleMediatorFromSource.addNewUnits(TypeOracleMediatorFromSource.java:54) at com.google.gwt.dev.javac.CompilationState.assimilateUnits(CompilationState.java:165) at com.google.gwt.dev.javac.CompilationState.<init>(CompilationState.java:82) at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:392) at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:275) at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:325) at com.google.gwt.dev.Precompile.precompile(Precompile.java:512) at com.google.gwt.dev.Precompile.precompile(Precompile.java:495) at com.google.gwt.dev.Precompile.precompile(Precompile.java:407) at com.google.gwt.dev.Compiler.run(Compiler.java:215) at com.google.gwt.dev.Compiler.run(Compiler.java:187) at com.google.gwt.dev.Compiler$1.run(Compiler.java:159) at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87) at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:81) at com.google.gwt.dev.Compiler.main(Compiler.java:166) [ERROR] Annotation error: expected class java.lang.Class, got null [ERROR] Annotation error: cannot resolve com.app.client.place.GoodbyePlace$Tokenizer java.lang.ClassNotFoundException: com.app.client.place.GoodbyePlace$Tokenizer at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(TypeOracleMediator.java:727) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotationValue(TypeOracleMediator.java:666) at com.google.gwt.dev.javac.TypeOracleMediator.createAnnotation(TypeOracleMediator.java:469) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotation(TypeOracleMediator.java:625) at com.google.gwt.dev.javac.TypeOracleMediator.resolveAnnotations(TypeOracleMediator.java:640) at com.google.gwt.dev.javac.TypeOracleMediator.resolveClass(TypeOracleMediator.java:786) at com.google.gwt.dev.javac.TypeOracleMediator.addNewTypes(TypeOracleMediator.java:411) at com.google.gwt.dev.javac.TypeOracleMediatorFromSource.addNewUnits(TypeOracleMediatorFromSource.java:54) at com.google.gwt.dev.javac.CompilationState.assimilateUnits(CompilationState.java:165) at com.google.gwt.dev.javac.CompilationState.<init>(CompilationState.java:82) at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:392) at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:275) at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:325) at com.google.gwt.dev.Precompile.precompile(Precompile.java:512) at com.google.gwt.dev.Precompile.precompile(Precompile.java:495) at com.google.gwt.dev.Precompile.precompile(Precompile.java:407) at com.google.gwt.dev.Compiler.run(Compiler.java:215) at com.google.gwt.dev.Compiler.run(Compiler.java:187) at com.google.gwt.dev.Compiler$1.run(Compiler.java:159) at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87) at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:81) at com.google.gwt.dev.Compiler.main(Compiler.java:166) [ERROR] Annotation error: expected class java.lang.Class, got null Scanning for additional dependencies: file:/C:/STUDIES/ws/projects/App6/app-main/src/main/java/com/App/client/HelloMVP.java Computing all possible rebind results for 'com.app.client.mvp.AppPlaceHistoryMapper' Rebinding com.app.client.mvp.AppPlaceHistoryMapper Invoking generator com.google.gwt.place.rebind.PlaceHistoryMapperGenerator [ERROR] Generator 'com.google.gwt.place.rebind.PlaceHistoryMapperGenerator' threw an exception while rebinding 'com.app.client.mvp.AppPlaceHistoryMapper' java.lang.NullPointerException at com.google.gwt.place.rebind.PlaceHistoryGeneratorContext.getWithTokenizerEntries(PlaceHistoryGeneratorContext.java:276) at com.google.gwt.place.rebind.PlaceHistoryGeneratorContext.initTokenizersWithoutGetters(PlaceHistoryGeneratorContext.java:320) at com.google.gwt.place.rebind.PlaceHistoryGeneratorContext.ensureInitialized(PlaceHistoryGeneratorContext.java:180) at com.google.gwt.place.rebind.PlaceHistoryGeneratorContext.getPlaceTypes(PlaceHistoryGeneratorContext.java:140) at com.google.gwt.place.rebind.PlaceHistoryMapperGenerator.writeGetPrefixAndToken(PlaceHistoryMapperGenerator.java:109) at com.google.gwt.place.rebind.PlaceHistoryMapperGenerator.generateOnce(PlaceHistoryMapperGenerator.java:94) at com.google.gwt.place.rebind.PlaceHistoryMapperGenerator.generate(PlaceHistoryMapperGenerator.java:57) at com.google.gwt.core.ext.GeneratorExtWrapper.generate(GeneratorExtWrapper.java:48) at com.google.gwt.core.ext.GeneratorExtWrapper.generateIncrementally(GeneratorExtWrapper.java:60) at com.google.gwt.dev.javac.StandardGeneratorContext.runGeneratorIncrementally(StandardGeneratorContext.java:662) at com.google.gwt.dev.cfg.RuleGenerateWith.realize(RuleGenerateWith.java:41) at com.google.gwt.dev.shell.StandardRebindOracle$Rebinder.rebind(StandardRebindOracle.java:74) at com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOracle.java:259) at com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOracle.java:248) at com.google.gwt.dev.DistillerRebindPermutationOracle.getAllPossibleRebindAnswers(DistillerRebindPermutationOracle.java:91) at com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.doFindAdditionalTypesUsingRebinds(WebModeCompilerFrontEnd.java:106) at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox$CompilerImpl.process(AbstractCompiler.java:254) at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:444) at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox$CompilerImpl.compile(AbstractCompiler.java:175) at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox$CompilerImpl.compile(AbstractCompiler.java:288) at com.google.gwt.dev.jdt.AbstractCompiler$Sandbox$CompilerImpl.access$400(AbstractCompiler.java:145) at com.google.gwt.dev.jdt.AbstractCompiler.compile(AbstractCompiler.java:632) at com.google.gwt.dev.jdt.BasicWebModeCompiler.getCompilationUnitDeclarations(BasicWebModeCompiler.java:124) at com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.getCompilationUnitDeclarations(WebModeCompilerFrontEnd.java:54) at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile(JavaToJavaScriptCompiler.java:517) at com.google.gwt.dev.jjs.JavaScriptCompiler.precompile(JavaScriptCompiler.java:35) at com.google.gwt.dev.Precompile.precompile(Precompile.java:541) at com.google.gwt.dev.Precompile.precompile(Precompile.java:495) at com.google.gwt.dev.Precompile.precompile(Precompile.java:407) at com.google.gwt.dev.Compiler.run(Compiler.java:215) at com.google.gwt.dev.Compiler.run(Compiler.java:187) at com.google.gwt.dev.Compiler$1.run(Compiler.java:159) at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87) at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:81) at com.google.gwt.dev.Compiler.main(Compiler.java:166) [WARN] For the following type(s), generated source was never committed (did you forget to call commit()?) [WARN] com.app.client.mvp.AppPlaceHistoryMapperImpl [ERROR] Errors in 'file:/C:/STUDIES/ws/projects/App6/app-main/src/main/java/com/App/client/HelloMVP.java' [ERROR] Line 43: Failed to resolve 'com.app.client.mvp.AppPlaceHistoryMapper' via deferred binding [ERROR] Cannot proceed due to previous errors ----------------------------------------------------------------------------------------------- I could understand the err a bit but couldn't find a resolution, a. It says ClassNotFound but am sure the Tokenizer class is present (as static nested classes) b. I debugged through GWT class PlaceHistoryGeneratorContext, as shown by java.lang.NullPointerException at com.google.gwt.place.rebind.PlaceHistoryGeneratorContext.getWithTokenizerEntries(PlaceHistoryGeneratorContext.java:276) and i see that it's not able to get the WithTokenizer annotation values, which are the tokenizer class names This is the runtime value for 'annotation' @com.google.gwt.place.shared.WithTokenizers(value=[null, null]) As you can see, value seems to be null, which is wrong and hence the NPE. My question is whether am missing something trivial or is this because of some API change in new release? Please assist. Thanks a bunch. p.s. i haven't tried the sample in GWT 2.1 or 2.1.1; i have setup env with GPE 2.2M1 + GWT 2.2M1, so bit reluctant to switch to old and try. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. 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