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https://issues.apache.org/jira/browse/GERONIMO-4381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12643239#action_12643239
 ] 

Jürgen Weber commented on GERONIMO-4381:
----------------------------------------

Sorry, thought, it's easy to reproduce. But anyway:

could not load class [Ljava.lang.String;
org.apache.geronimo.common.DeploymentException: could not load class 
[Ljava.lang.String;
        at 
org.apache.geronimo.connector.deployment.ResourceRefBuilder.buildNaming(ResourceRefBuilder.java:137)
        at 
org.apache.geronimo.j2ee.deployment.NamingBuilderCollection.buildNaming(NamingBuilderCollection.java:53)
        at 
org.apache.geronimo.openejb.deployment.EjbDeploymentBuilder.addEnc(EjbDeploymentBuilder.java:321)
        at 
org.apache.geronimo.openejb.deployment.EjbDeploymentBuilder.buildEnc(EjbDeploymentBuilder.java:286)
        at 
org.apache.geronimo.openejb.deployment.EjbModuleBuilder.addGBeans(EjbModuleBuilder.java:764)
        at 
org.apache.geronimo.j2ee.deployment.EARConfigBuilder.buildConfiguration(EARConfigBuilder.java:647)
        at org.apache.geronimo.deployment.Deployer.deploy(Deployer.java:254)
        at org.apache.geronimo.deployment.Deployer.deploy(Deployer.java:133)
        at sun.reflect.GeneratedMethodAccessor255.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at 
org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
        at 
org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:124)
        at 
org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:867)
        at 
org.apache.geronimo.kernel.basic.BasicKernel.invoke(BasicKernel.java:239)
        at 
org.apache.geronimo.deployment.plugin.local.AbstractDeployCommand.doDeploy(AbstractDeployCommand.java:116)
        at 
org.apache.geronimo.deployment.plugin.local.RedeployCommand.redeployUpdatedConfiguration(RedeployCommand.java:137)
        at 
org.apache.geronimo.deployment.plugin.local.RedeployCommand.run(RedeployCommand.java:106)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: [Ljava.lang.String; in classloader 
default/CommandEar/1225209995541/car
        at 
org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:437)
        at 
org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:279)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at 
org.apache.geronimo.connector.deployment.ResourceRefBuilder.buildNaming(ResourceRefBuilder.java:135)
        ... 18 more


> Better error message for trying to inject String arrays
> -------------------------------------------------------
>
>                 Key: GERONIMO-4381
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4381
>             Project: Geronimo
>          Issue Type: Improvement
>      Security Level: public(Regular issues) 
>          Components: dependencies
>            Reporter: Jürgen Weber
>            Priority: Minor
>
> I erroneously tried to inject a String array
> @Resource
>       private String[] ...
> There should be a better error message for this than
> could not load class [Ljava.lang.String;
> org.apache.geronimo.common.DeploymentException: could not load class 
> [Ljava.lang.String;

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