NoClassDefFoundError with Gin 1.5 and GWT 2.4

Question

I am trying to put together a GWT webapp following this GWT MVP tutorial but using newer releases of the used libraries because not all of them are available any more or not compatible with GWT 2.4.

The problem is that when I run the project, I get the following to the console:

Starting Jetty on port 8888
[WARN] failed com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload@6ee76fcc{/,/home/raido/Kood/workspaceJava/gwtmvp/war}
java.lang.NoClassDefFoundError: com/google/inject/internal/util/$Preconditions
at com.google.inject.servlet.ServletModule.configure(ServletModule.java:44)
at com.google.inject.AbstractModule.configure(AbstractModule.java:59)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
at com.google.inject.spi.Elements.getElements(Elements.java:101)
at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:135)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:113)
at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:101)
at com.google.inject.Guice.createInjector(Guice.java:105)
at com.google.inject.Guice.createInjector(Guice.java:76)
at com.google.inject.Guice.createInjector(Guice.java:63)
at gwtmvp.server.guice.GuiceServletConfig.getInjector(GuiceServletConfig.java:11)
at com.google.inject.servlet.GuiceServletContextListener.contextInitialized(GuiceServletContextListener.java:45)
at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:222)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: com.google.inject.internal.util.$Preconditions
at java.lang.ClassLoader.findClass(ClassLoader.java:373)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:352)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:334)
... 30 more
[WARN] failed RequestLogHandler@4113a03d
java.lang.NoClassDefFoundError: com/google/inject/internal/util/$Preconditions
at com.google.inject.servlet.ServletModule.configure(ServletModule.java:44)
at com.google.inject.AbstractModule.configure(AbstractModule.java:59)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
at com.google.inject.spi.Elements.getElements(Elements.java:101)
at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:135)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:113)
at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:101)
at com.google.inject.Guice.createInjector(Guice.java:105)
at com.google.inject.Guice.createInjector(Guice.java:76)
at com.google.inject.Guice.createInjector(Guice.java:63)
at gwtmvp.server.guice.GuiceServletConfig.getInjector(GuiceServletConfig.java:11)
at com.google.inject.servlet.GuiceServletContextListener.contextInitialized(GuiceServletContextListener.java:45)
at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:222)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: com.google.inject.internal.util.$Preconditions
at java.lang.ClassLoader.findClass(ClassLoader.java:373)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:352)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:334)
... 30 more
[WARN] Error starting handlers
java.lang.NoClassDefFoundError: com/google/inject/internal/util/$Preconditions
at com.google.inject.servlet.ServletModule.configure(ServletModule.java:44)
at com.google.inject.AbstractModule.configure(AbstractModule.java:59)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
at com.google.inject.spi.Elements.getElements(Elements.java:101)
at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:135)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:113)
at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:101)
at com.google.inject.Guice.createInjector(Guice.java:105)
at com.google.inject.Guice.createInjector(Guice.java:76)
at com.google.inject.Guice.createInjector(Guice.java:63)
at gwtmvp.server.guice.GuiceServletConfig.getInjector(GuiceServletConfig.java:11)
at com.google.inject.servlet.GuiceServletContextListener.contextInitialized(GuiceServletContextListener.java:45)
at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:222)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: com.google.inject.internal.util.$Preconditions
at java.lang.ClassLoader.findClass(ClassLoader.java:373)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:352)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:334)
... 30 more

Libraries needed for the projects vs libraries I have:

• gin.jar --- gin-1.5-post-gwt-2.2.jar (gin-1.5)
• aopalliance.jar (from Google Gin) --- aopalliance.jar (gin-1.5)
• guice-2.0.jar (from Google Gin. IMPORTANT - use the version supplied with Gin and not Guice) --- guice-snapshot.jar (gin-1.5)
• guice-servlet-2.0.jar (from Google Guice) --- guice-servlet-3.0.jar (guice-3.0)
• gwt-dispatch-1.0.0-SNAPSHOT.jar (from gwt-dispatch) --- gwt-dispatch-1.2.0.jar
• gwt-log-2.6.2.jar (from gwt-log) --- gwt-log-3.1.8.jar
• gwt-presenter-1.0.0-SNAPSHOT.jar (from gwt-presenter) --- gwt-presenter-1.0.0.jar
• log4j.jar (from log4j) --- log4j-1.2.16.jar

Gwt-presenter also has a newer version, 1.1.1 which caused additional problems so I went back to 1.0.0 but that is an another story.

I have the code uploaded to GitHub. Most of it is just copy-paste from the mentioned tutorial with minor differences.

Answer 1

Libraries you have posted

guice-2.0.jar (from Google Gin. IMPORTANT - use the version supplied with Gin and not Guice) --- guice-snapshot.jar (gin-1.5)
guice-servlet-2.0.jar (from Google Guice) --- guice-servlet-3.0.jar (guice-3.0)

seems colliding. It seems you have Guice 2.0.jar and Guice 3.0.jar both in your classpath. Keep only Guice 3.0.jar. This should solve your problem.

Answer 2

I've followed the same tutorial, I tried to use more recent JARS like you did and I found the same errors as you as you can see here: GWT, Guice and GIN compilation. The issue was caused because some missing JARS, specifically Guice-3.0.jar.

Very that the required JAR is in your classpath: that should fix the problem.