Determine 'All Known Implementing Classes'

Newbie & Debugging Questions
#1

You probably know the part of the Java Api Doc:

[quote]All Known Implementing Classes: …
[/quote]
Now, I was wondering if its possible to query all classes implementing an interface or marked with a specified annotation type at runtime?

Btw., I took a look at the Class object but did find the methods I was looking for…

#2

blahblahblah’s code in this thread will allow you to find all classes implementing an interface

http://www.java-gaming.org/forums/index.php?topic=9240.0

Cheers,
Brett

#3

thanks for the reply,

I guess I have to wait until http://javagamesfactory.org/ is online again…

#4

the server is up again, but unfortunately it doesn’t work:


Class[] list = new ClassLocater().getSubclassesOf(java.util.EventListener.class);
for(Class c : list)
  System.out.println(c);

there are no classes and interfaces listed from the java.awt.event package. :frowning:

any other ideas or is this just not possible?

#5

you might have a look at the Doclet API, in particular, the RootDoc class. Of course Sun will say not to use com.sun.* packages so you might be interested in opening up src.zip in your SDK folder and see how the Doclet API is doing it…

#6

thanks for the answer woogley.

unfortunately, RootDoc is an interface and the two classes from the Doclet API (Doclet + LanguageVersion) seem to be dummy implementations. -> src.zip seems not to be helpful… :-\