CODEWITHSUNDEEP
javanoclassdeffounderror
Rajesh Pitty
Rajesh Pitty

Reputation: 2843

NoClassDefFoundError messages differ with context

NoClassDefFoundError gives me different kinds of messages in different contexts

By contexts, I mean,

Context 1: If I remove the sapjco3.jar, the message is

java.lang.NoClassDefFoundError: com/xxx/xxx/AbapException

Context 2: If I add the jar file in the webapp lib, the message is

java.lang.NoClassDefFoundError: com.xxx.xxx.CpicDriver

I understand java.lang.NoClassDefFoundError is thrown when a class is not found during runtime.

but why there is a difference in representing the class in the message, ie with a slash (path) and dot (package)?

Upvotes: 2

Views: 311

Answers (2)

Andrea Parodi
Andrea Parodi

Reputation: 5614

If you look at javadoc for NoClassDefFoundError exception, you'll see it has two constructor, one of which is accepting a message as parameter.

So formatting of the name for the class not found is depending on the code throwing the exception .

I don't know sapjco, but maybe the two classes are loaded by differents class loaders...

Upvotes: 2

Abhilash
Abhilash

Reputation: 792

Seems like java.lang.NoClassDefFoundError: com/xxx/xxx/AbapException is missing. This is not in sapjco3.jar.

Suppose a.class and b.class are required and order of loading is a,b. if a and b are not in classpath you will first get a is missing. if a is added in the class path you will get b is missing. Hope that is clear.

Upvotes: 0

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