Using Java ((Abstract Class and Interface)) 13.11 (The Octagon class)) Write a class named Octagon that extends faces. Assume that all eight sides of the Comparableand Cloneable inter-be computed useing the fllowing formula : area =(2 + 4 / square root of 2)* side * side Draw the UML diagram that involves Octagon, GeomtricObject,Comparable and Cloneable. Write a test program that create a new Object using the clone method and comoare the two object using the compareTo method.

Write a code for the following using Console.WriteLine.

Can you please help me with this, its in java. Thank you.   Write classes in an inheritance hierarchy Implement a polymorphic method Create an ArrayList object Use ArrayList methods For this, please design and write a Java program to keep track of various menu items. Your program will store, display and modify salads, sandwiches and frozen yogurts. Present the user with the following menu options: Actions: 1) Add a salad2) Add a sandwich3) Add a frozen yogurt4) Display an item5) Display all items6) Add a topping to an item9) QuitIf the user does not enter one of these options, then display:Sorry, <NUMBER> is not a valid option.Where <NUMBER> is the user's input.   All menu items have the following: Name (String) Price (double) Topping (StringBuilder or StringBuffer of comma separated values) In addition to everything that a menu item has, a main dish (salad or sandwich) also has: Side (String) A salad also has: Dressing (String) A sandwich also has: Bread type…

3.25 Fixed Sized Deque Your task is to create an implementation of the Java Deque interface that can only hold N items where N is a number passed into the constructor. Note that most (if not all) of the unit tests rely on the method object[] toArray() inherited from Collection. Therefore, you must make sure you implement that method correctly in order to get most of the points. 301664.1524810.gpazay7 LAB АCTIVITY 3.25.1: Fixed Sized Deque 0/ 70 Submission Instructions Compile command javac FixedsizedDeque.java -xlint:all -encoding utf-8 We will use this command to compile your code Upload your files below by dragging and dropping into the area or choosing a file on your hard drive. FixedSizedDeque.java Drag file here or Choose on hard drive.