Question 4 (14 marks): Inheritance, Interfaces and Abstract classes . . Suppose a class Fribble exists with the following state and behaviour: It cannot be subclassed, but it is a subtype of Flummery and a subclass of Fadoodle. Fadoodle cannot be instantiated directly but it has one constructor that accepts a String value. It has a constant double variable called malarkey set to 9.20, that cannot be accessed outside the class. It has one constructor that accepts a String variable, and a double value. This is used to instantiate the class by clients. It defines the jabberwocky(..) method from Flummery which accepts two double values, calculates the sum of the double values and prints the result. It overloads the jabberwocky(..) method with another that accepts one double value and calls the first jabberwocky(..) method with the input parameter and the malarkey variable. All methods return void unless stated otherwise. . . Write complete Java code for Fribble, Flummery and Fadoodle