Package class list

Hi all,
I'm new in java,
could anyone tell'me how is possible to list a package
contents in order to load (at run time) all the owned classes?
I know how i can dynamically load a class, but i didn't find
an easy way to list all the classes in a package.
Thank you

This is the issue:
given a package name e.g "Package", i have to
load all the classes in that package.
So, first i have to retrive all the contained classes name and
then i can use the following code to load:
public Object loadClass(String className) {
try
ClassLoader cl= ClassLoader.getSystemClassLoader();
Class c=cl.loadClass("Package."+className);
return cl.newInstance();
catch (Exception e)
return null;
but at didn't fin any way to list all the package contents in order to call
the function above for any contained class.
thank you.

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