Create an interface MessageEncoder that has a single abstract method encode (plainText), where plainText is the message to be encoded. The method will return the encoded message.
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- Create an interface MessageEncoder that has a single abstract method encode(plainText), where plainText is the message to be encoded. The method will return the encoded message.5. Create an interface MessageDecoder that has a single abstract method decode (cipherText), where cipher Text is the message to be decoded. The method will return the decoded message. Modify the classes 8.5 Graphics Supplement SubstitutionCipher and ShuffleCipher, as described in Exercises 16 and 17, so that they implement Message Decoder as well as the interface MessageEncoder that Exercise 15 describes. Finally, write a program that allows a user to encode and decode messages entered on the keyboard. 703Does it make sense to implement each and every method of an interface while doing so?
- Use java programming language 1.1 Create a Student Object project. Create a Student class and use the provided UML diagram to code the instance fields, constructors and methods. Note: The module mark is the average of the participation mark and the examination mark - calculate this using the calcModuleMark() method. The determineStNumber() method should compile a student number with the first 3 letters of the student's name, a '#' symbol, and a 3-digit randomly generated number (make use of a for-loop to concatenate these 3-digits). The stNumber data field should be set in the constructor by calling the determineStNumber() method. The toString() method must compile a string to display the student number, participation mark, examination mark, and module mark, formatted in table format. Student number PMark EMark MMark Mar#9186 81 64 72.00 1.2 Create a testStudents class. Do the following: -Write a static method called display() which receives…Declare an interface IA with two method Me() and You() in JAVA . Define two classes CA and CB which implement IA such that Me in CA displays it is me in CA and You in CA displays how are you from CA. The same message should be displayed from CB. Use the reference variable of the IA to implement runtime polymorphism.Your assignment for this course is to implement a beginner level Book Management System (BMS) in Java language. BMS contains 2 classes: Bookand BookList. The Book class has the following attributes: code: a String object, that hold the book’s code. title: a String object, that hold the book’s title. qua: int variable, that hold the number of books with the same code in the library. price: a double variable, that hold the book’s price. The BookList class contains only one data member: ArrayList<Book> t. When running the program display the menu as below:1. Input & add book(s) to the end.2. Display all books.3. Search a book for given code.4. Update the book’s price for given code.5. Find the (first) max price value.6. Sort the list ascendingly by code.7. Remove the book having given code.8. Load data from file.0. Exit.Notes:(1) The book’s code must be unique in the list.(2) Display all books in format (code, title, quantity, price).(5)…
- Create an interface MessageDecoder that has a single abstract method decode(cipherText), where cipherText is the message to be decoded.The method will returnthe decoded message. Create a class SubstitutionCipher that implements the interface MessageDecoder as described above. The constructorshould have one parameter called shift. Define the method decode so that each letter is shifted by the value in the shif. For example, if shift is 3, a will be replaced by d, b will be replaced bt e, c will be replaced by f, and so on. Hint: You may wish to define a private methodthat shifts a single character. Create a class ShuffleCipher that implements the interface MessageDecoder. The constructor should haveone parameter called n. Define the method decode so that the message is shuffledn times.To perform one shuffle, split the message in half and then take the charactersfrom each half alternatively. For example, if the messsage is "abcdefghi", the halves are "abcde" and "fghi". The shuffled…How do you define an interface and how do you use it in Java. what happens if anabstract class implements an interface? Is it possible to implement an interfacewithout using all the abstract methods in the implemented class? Elaborate youranswer with proper Examples andexplanations……………………………………………………..only in java not in java c++ Create an interface EnhancedShape that extends Shape and also requires a method public double perimeter( ) to be implemented by any class that uses the interface. Create a class file, an interface ehancedshape extends shape, and an interface shape file.
- Write a Program in Java Create an interface EnhancedShape that extends Shape and also requires a method public double perimeter( ) to be implemented by any class that uses the interface. (Note: Interfaces can inherit other interface just like a class by using extends keyword. Create a class file, an interface ehancedshape extends shape, and an interface shape file).Create an interface that shall have 2 methods and one string type attribute, also create an implementation class of the interface that shall define both methods (you can print YOUR favorite quote in each method body).Please help answer this Java multiple choice question. Assume you are a developer working on a class as part of a software package for running artificial neural networks. The network is made of Nodes (objects that implement a Node interface) and Connections (objects that implement a Connection interface). To create a new connection you call the constructor for a concrete class that implements the Connection interface, passing it three parameters: Node origin, Node target, and double weight. The weight is a double that is greater than or equal to 0, and represents how strongly the target node should weigh the input from the origin node. So with a weight of 0.1 the target node will only slightly weight the input from the origin, but with a weight of 725.67 the target node will strongly weight the input. The method throws an IllegalArgumentException. Which of the following are true? A. All of the above are true. B. The code:Connection c = new ConvLayerConnection(origin, target,…