Load the class on the way

I have a problem. I have a absolute path to my package, for example:

c:\java_project\src\com\myclass\mypackage

In this package is present 3 classes: MyClass1, MyClass2, MyClass3

I need load all classes to List

I load all .java file to List, but I don't understand how this classes load

List<URL> fieldURLs=new ArrayList<URL>();
File pathToClasses = null;
pathToClasses = new File(packageName);
File[] files = pathToClasses.listFiles();

Please help me with this problem