What is org.springframework.asm.ClassVisitor class?

[dims]

Hi!

I am getting an exception which is concerning a class ClassVisitor from package org.springframework.asm. But no any spring version contains this class or package. What can this mean? And what is this class?

I am using

org.springframework.beans-3.0.5.RELEASE.jar
org.springframework.context-3.0.5.RELEASE.jar
org.springframework.core-3.0.5.RELEASE.jar

jars in in Eclipse Helios project of type "Java Project" (no spring wizards were used).

Were these jars hacked to inject reference to this ghost class?

Stack trace below:

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/asm/ClassVisitor
at org.springframework.context.support.AbstractRefres hableApplicationContext.customizeBeanFactory(Abstr actRefreshableApplicationContext.java:218)
at org.springframework.context.support.AbstractRefres hableApplicationContext.refreshBeanFactory(Abstrac tRefreshableApplicationContext.java:129)
at org.springframework.context.support.AbstractApplic ationContext.obtainFreshBeanFactory(AbstractApplic ationContext.java:467)
at org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:397)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:139)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:83)
at com.scisbo.programw.wrapper.Runner.main(Runner.jav a:12)
Caused by: java.lang.ClassNotFoundException: org.springframework.asm.ClassVisitor
at java.net.URLClassLoader$1.run(URLClassLoader.java: 202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 07)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 48)

... 7 more

[Marten Deinum]

Please use [ code][/code ] tags when posting code/stacktraces...

The class is in the spring-asm jar file... I suggest using maven, gradle, ant/ivy to manage your dependencies that way you don't have to hunt for jars yourself.

[dims]

Thanks for good advice! I have found this mysleft already. But why doesn't this package in javadoc?

[Marten Deinum]

Because there is no javadoc. If I'm not mistaken this class is generated (the whole package actually) at compile/build time of the spring framework. You will also find no trace of sourcecode for this class. Source code is needed to generate javadoc, hence no sources no javadoc.