Question

How can I use java reflection or similar to find project name by just having an instance of the class?
If not the project name — which is what I really want — can I find the package name?

Answer 1

Projects are simply organizational tools used by IDEs, and therefore the project name is not information contained in the class or the JVM.

To get the package, use Class#getPackage(). Then, Package#getName() can be called to get the package as the String you see in your code’s package declaration.

Class<?> clazz = Application.class;
Package package = clazz.getPackage();
System.out.println(package.getName());