# Kotlin Annotation compiles, but seems error byte code generated **URL:** \ **Category:** Uncategorized\ **Created:** [October 20, 2012, 7:46am UTC](https://discuss.kotlinlang.org/t/kotlin-annotation-compiles-but-seems-error-byte-code-generated/1052 "2012-10-20T07:46:45Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![outersky](https://avatars.discourse-cdn.com/v4/letter/o/7bcc69/32.png) [@outersky](https://discuss.kotlinlang.org/u/outersky)\ **Post date:** [October 20, 2012, 7:46am UTC](https://discuss.kotlinlang.org/t/kotlin-annotation-compiles-but-seems-error-byte-code-generated/1052/1 "2012-10-20T07:46:45Z")
I'm translating ebean-jaxrs to kotlin: Provider Consumes( MediaType.APPLICATION\_JSON ,"text/json") Produces( MediaType.APPLICATION\_JSON , "text/json") public class JaxrsJsonProvider : MessageBodyWriter\, MessageBodyReader\ { .... it compiles , but throws following exception when running : java.lang.annotation.AnnotationTypeMismatchException: Incorrectly typed data found for annotation element public abstract java.lang.String[] javax.ws.rs.Consumes.value() (Found data of type Array with component tag: 115) at sun.reflect.annotation.AnnotationTypeMismatchExceptionProxy.generateException(AnnotationTypeMismatchExceptionProxy.java:39) at sun.reflect.annotation.AnnotationInvocationHandler.invoke(AnnotationInvocationHandler.java:57) at $Proxy27.value(Unknown Source) at com.sun.jersey.core.header.MediaTypes.createMediaTypes(MediaTypes.java:197) at com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:182) at com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:175) at com.sun.jersey.core.spi.factory.MessageBodyFactory.init(MessageBodyFactory.java:162) at com.sun.jersey.server.impl.application.WebApplicationImpl.\_initiate(WebApplicationImpl.java:1279) at com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:163) at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:769) at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:765) at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193) at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:765) at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:760) at com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:489) at com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:319) at com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609) at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210) at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:374) at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:557) at javax.servlet.GenericServlet.init(GenericServlet.java:244) at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:517) at org.eclipse.jetty.servlet.ServletHolder.doStart(ServletHolder.java:331) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64) at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:747) at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:263) at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1238) at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:706) at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:480) at org.mortbay.jetty.plugin.JettyWebAppContext.doStart(JettyWebAppContext.java:293) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64) at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:229) at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:172) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64) at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:229) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64) at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95) at org.eclipse.jetty.server.Server.doStart(Server.java:277) at org.mortbay.jetty.plugin.JettyServer.doStart(JettyServer.java:65) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64) at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:511) at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:364) at org.mortbay.jetty.plugin.JettyRunMojo.execute(JettyRunMojo.java:516) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) at org.codehaus.classworlds.Launcher.main(Launcher.java:47) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120) Oct 20, 2012 2:37:14 PM com.sun.jersey.server.impl.cdi.CDIComponentProviderFactoryInitializer initialize INFO: CDI support is enabled Oct 20, 2012 2:37:14 PM com.sun.jersey.server.impl.application.WebApplicationImpl \_initiate INFO: Initiating Jersey application, version 'Jersey: 1.14 09/09/2012 05:39 PM' The source file and classes are uploaded ! Thanks! Outersky [jaxrs.kt.zip](https://discuss.kotlinlang.org/uploads/short-url/dArmROUO02cZazEtnBiwA9iPysl.zip) (4.85 KB) [AbstractEntityResource.class.zip](https://discuss.kotlinlang.org/uploads/short-url/uqIv2oFmP8uAizSVO4qUsgWnD0w.zip) (4.09 KB) [AbstractEntityResource$ClassObject$.class.zip](https://discuss.kotlinlang.org/uploads/short-url/ncGlshZMwan38dYcQKtHzmlCGt6.zip) (771 Bytes) ---
**Author:** ![outersky](https://avatars.discourse-cdn.com/v4/letter/o/7bcc69/32.png) [@outersky](https://discuss.kotlinlang.org/u/outersky)\ **Post date:** [October 20, 2012, 8:00am UTC](https://discuss.kotlinlang.org/t/kotlin-annotation-compiles-but-seems-error-byte-code-generated/1052/2 "2012-10-20T08:00:12Z")
I put the annotation into a java file: @Provider @Consumes( { MediaType.APPLICATION\_JSON, "text/json" }) @Produces( { MediaType.APPLICATION\_JSON, "text/json" }) public interface IProvider { } then in kotlin remove all annotations : public class JaxrsJsonProvider : MessageBodyWriter\, MessageBodyReader\, IProvider { .... Still get the simillar error: java.lang.annotation.AnnotationTypeMismatchException: Incorrectly typed data found for annotation element public abstract java.lang.String[] javax.ws.rs.Consumes.value() (Found data of type Array with component tag: 101) at sun.reflect.annotation.AnnotationTypeMismatchExceptionProxy.generateException(AnnotationTypeMismatchExceptionProxy.java:39) at sun.reflect.annotation.AnnotationInvocationHandler.invoke(AnnotationInvocationHandler.java:57) at $Proxy25.value(Unknown Source) at com.sun.jersey.core.header.MediaTypes.createMediaTypes(MediaTypes.java:197) at com.sun.jersey.server.impl.modelapi.annotation.IntrospectionModeller.addConsumes(IntrospectionModeller.java:158) So maybe it’s not caused by kotlin . still working on this  :( ---
**Author:** ![abreslav](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.kotlinlang.org/abreslav/32/8279_2.png) [@abreslav](https://discuss.kotlinlang.org/u/abreslav)\ **Post date:** [October 20, 2012, 8:27am UTC](https://discuss.kotlinlang.org/t/kotlin-annotation-compiles-but-seems-error-byte-code-generated/1052/3 "2012-10-20T08:27:18Z")
Looks like a bug. Please report to the tracker ---
**Author:** ![outersky](https://avatars.discourse-cdn.com/v4/letter/o/7bcc69/32.png) [@outersky](https://discuss.kotlinlang.org/u/outersky)\ **Post date:** [October 21, 2012, 5:50am UTC](https://discuss.kotlinlang.org/t/kotlin-annotation-compiles-but-seems-error-byte-code-generated/1052/4 "2012-10-21T05:50:14Z")
At last I found out the real cause is : used a static member from java class ! After changed to string literals, everything is ok! reported here: [KT-2978](http://youtrack.jetbrains.com/issue/KT-2978 "Belongs to project 'Kotlin'") [Annotation can not use static members from java class](http://youtrack.jetbrains.com/issue/KT-2978)