Inheritance Functional Interface

InheritanceFI.java

@FunctionalInterface
interface ParentInterface{
   void parentAbstractMethod();
}

@FunctionalInterface
interface ChildInterface extends ParentInterface{
   void parentAbstractMethod();

   default void defaultChildMethod1(){
   }

   default void defaultChildMethod2(){
   }

   static void staticChildMethod(){
   }

   String toString();
}

interface AnotherChildInterface extends ChildInterface{
   public String someAbstractMethod(String someParameter);
}