Question

I want to write my own marker interfaces like java.io.Serializable or Cloneable which can be understandable to JVM. Please suggest me the implementation procedure.

For example I implemented a interface called NotInheritable and all the classes implementing this interface has to avoid inheritance.

Answer 1

public interface MyMarkerInterface {}

public class MyMarkedClass implements MyMarkerInterface {}

Then you can for example have method taking only MyMarkerInterface instance:

public myMethod(MyMarkerInterface x) {}

or check with instanceof at runtime.