Question

I’m new to java.
I’m trying to use some dynamically loaded classes in my application.
The application doesn’t know classes , Just it try to load a class by name that its name came from input.
It doesn’t know class (So I can’t use casting) but just needs to call some methods of that class (every class should have that methods).
I thought about interfaces but I don’t know how.
How can I call those methods?

Thanks

Answer 1

Yes, you can use the Class class.

   public InterfaceType getDynamicClass(String className) {
       return (InterfaceType) Class.forName(className).newInstance();
   }

The interface is to ensure that the methods exists. Of course, you’ll have to watch out for the exceptions and handle them appropriately for your application.