Load a class dynamically which is not in a folder in java

Question

I want to load a class dynamically which is not in a jar file but in a folder called Dinamics. Here is my code

URL urlOfClass=new File("Dinamics/").toURI().toURL();
URL[] classUrl=new URL[]{urlOfClass};
System.err.println(urlOfClass);
Class myClass=new URLClassLoader(classUrl).loadClass(command1);
myClass.getDeclaredConstructor(String.class).newInstance(command2);

This is the printed urlOfClass

......ha/Documents/NetBeansProjects/Project2.0/Dinamics/

And I get this error message

java.lang.ClassNotFoundException: MyClassName

What did I do wrong here?