How to get list of classes from a package

Tom Hawtin Thomas.Hawtin at Sun.COM
Mon Feb 16 17:29:42 UTC 2009

David M. Lloyd wrote:
> On 02/16/2009 10:22 AM, Ulf Zibis wrote:
>> can anybody tell me, how I could get al list or enumeration of the 
>> classes, which belong to a package.
>> I can't see any appropriate method in java.lang.Package :-(
> This isn't really possible at run time, since one doesn't know whether a 
> class exists until one tries to load it.  The classloader might not even 
> know.  Also, a package can span classloaders, adding more complexity to 
> the problem.

IIRC, you will get a different Package for each class loader, for a 
given package name. Certainly classes with the same package name will 
not have Java access to default/protected 
members/classes/interface/constructors from different class loaders.

But yes, a list of classes is not necessarily complete. Also, IIRC, 
Proxy dynamically inserts classes into packages as well.

Tom Hawtin

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