<< Windows, Java, Linux, ... | Home | BeanShell >>

Duplicate Classes In CLASSPATH

Here's a hypothetical question :): Should the same Java class be allowed to appear twice in the CLASSPATH of one application (in two different jar files)?

Responses[4] RSS feed for responses to this blog entry
Posted by Weiqi Gao on May 20, 2004 3:53:55 PM CDT #


Reply

Re: Duplicate Classes In CLASSPATH

Comment from Anonymous on May 20, 2004 4:03:32 PM CDT #
absolutely. its a commonly used technique when overriding a class that is part of a library. include your custom jar with the class before the library jar in the classpath.
Reply

Re: Duplicate Classes In CLASSPATH

Comment from Eric Burke on May 20, 2004 7:04:57 PM CDT #
Unless one of the JARs is sealed or signed, in which case you run into problems...
Reply

Re: Duplicate Classes In CLASSPATH

Comment from Weiqi Gao on May 20, 2004 8:24:21 PM CDT #

What about the same resource, such as log4j.xml?

Reply

Re: Duplicate Classes In CLASSPATH

Comment from Eric Burke on May 22, 2004 12:35:54 PM CDT #
Hmmm....good question. We'll have to try it out.

Add a comment Send a TrackBack