inteface not visible from classloader

[carsten_0312]

Hallo zusammen,

weiß jemand, was die folgende Meldung bedeutet:

...IllegalArgumentException: interface ..... is not visible from classloader...


Wenn ein Classloader eine Klasse/Interface nicht findet, sollte doch eine ClassNotFoundException o.ä. kommen.

Ich finde im grossen Internet lediglich Forumsbeiträge bezüglich dieser Fehlermeldung aber keine Erklärung, was da eigentlich schiefläuft.

Für jeden Hinweis bin ich sehr dankbar!

Grüße,
Carsten

 

[The_S]

Code?

 

[bygones]

einzige stelle an der ich es kenn ist in Proxy (Java Platform SE 6)

wenns das ist - sowohl Proxy selber aus auch die methode ist recht ausfuehrlich dokumentiert

There are several restrictions on the parameters that may be passed to Proxy.getProxyClass:

* All of the Class objects in the interfaces array must represent interfaces, not classes or primitive types.
* No two elements in the interfaces array may refer to identical Class objects.
* All of the interface types must be visible by name through the specified class loader. In other words, for class loader cl and every interface i, the following expression must be true:

Class.forName(i.getName(), false, cl) == i


* All non-public interfaces must be in the same package; otherwise, it would not be possible for the proxy class to implement all of the interfaces, regardless of what package it is defined in.
* For any set of member methods of the specified interfaces that have the same signature:
o If the return type of any of the methods is a primitive type or void, then all of the methods must have that same return type.
o Otherwise, one of the methods must have a return type that is assignable to all of the return types of the rest of the methods.
* The resulting proxy class must not exceed any limits imposed on classes by the virtual machine. For example, the VM may limit the number of interfaces that a class may implement to 65535; in that case, the size of the interfaces array must not exceed 65535.

If any of these restrictions are violated, Proxy.getProxyClass will throw an IllegalArgumentException