Why does the Number Class from this slide need to be abstract
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Why does the Number Class from this slide need to be abstract?
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- MUST BE IN JAVA. PLEASE USE COMMENTS AND WRITE THE CODE IN SIMPLEST FORM.I need help in improving my code. This is an elevator simulator that uses polymorphism and object-oriented programming to simulate the movement of elevators in a building with multiple types of passengers and elevators.The system has 8 elevators, each of which can be one of 4 types of elevators, with a certainpercentage of requests for each type. Similarly, each passenger can be one of 4 types, with adifferent percentage of requests for each type. The simulation should have 4 types of Passengers: Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements. VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators. Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators. Glass: This type…This is the question: Design and implement a class called Bug, which represents a bug moving along a horizontal wire. The bug can only move for one unit of distance at a time, in the direction it is facing. The bug can also turn to reverse direction. For your design, create a UML Class diagram similar to Figure 5.5 on page 180 of the textbook. Note that you need to include the constructor in the methods section if you code a constructor. Bug will require a toString method to return the current position and which direction the bug is facing to the driver so it can be output.Hint: Remember that a horizontal line has a zero position in the middle with positive to the right and negative to theleft. Consider that a bug will land on the wire at some point before starting along the wire.Write an interactive test driver that instantiates a Bug, then allows the user to manipulate it with simple commands like Output (to see the position and direction), Move, Turn, Exit ... single letters work…
- Write the Java code for the ensuing UML diagram. For the supplied class, create the constructor, mutator, and accessor methods. Create an instance of the Application class using the Demo class in the main function. Reminder: Method bodies are not required in order to compile and test the class's structure. Just make sure to provide dummy return values for any methods that don't return void. Application +Name: String + Run ( Exit ( A- B I 7 m I Q- E % 2 U S X₂ X² VHFI have 5 classes in the picture, I want an uml drawing that expresses them ... I want it necessary, pleaseCreate a python program for the following details: Create an abstract class Shape Under Shape create abstract methods name, sides, and color. Create subclasses of Shape with the name Square, Pentagon, and Triangle. Under each subclass, implement the methods name, sides, and color with the following details. Square: print "Square", "I have 4 sides", "My color is yellow" Pentagon: print "Pentagon", "I have 5 sides", "My color is blue" Triangle: print "Triangle", "I have 3 sides", "My color is red" Create an instance of each subclasses. Ask the user for an input. (Assume the user will input 3, 4, or 5 only) if the user input 3 - print the details of an object of subclass Triangle if the user input 4 - print the details of an object of subclass Square if the user input 5 - print the details of an object of subclass Pentagon SAMPLE INPUT 1. num SAMPLE OUTPUT NEEDED: Enter a number: 3 Triangle I have 3 sides My color is red
- Make sure you know the difference between an abstract class and an interface and constructors.Answer the following questions based on knowledge of inner class: Please answer according to question please please.Implement the Solver class. In doing so, you are allowed to define other classes to help you (as well as use “built-in” Java classes or the book’s classes). The point of the solver class is the solve method which takes a board/puzzle configuration represented as a 2D array of booleans and returns a char array containing a minimal sequence of moves that will lead to the solved board (all the cells around the edges being filled). The board configuration is passed in as a 5-by-5 boolean array of Booleans with exactly 16 true cells (filled) and 9 false cells (empty). The solve method then returns an array of characters representing a minimal sequence of moves that solves the puzzle. In other words, if the characters from the returned array are used in order as input to the move method on the Board object representing the initial configuration, the resulting board configuration represents the solved board. Furthermore, the solution must be minimal in the sense that there are no solutions…
- Implement the Solver class. In doing so, you are allowed to define other classes to help you (as well as use “built-in” Java classes or the book’s classes). The point of the solver class is the solve method which takes a board/puzzle configuration represented as a 2D array of booleans and returns a char array containing a minimal sequence of moves that will lead to the solved board (all the cells around the edges being filled). The board configuration is passed in as a 5-by-5 boolean array of Booleans with exactly 16 true cells (filled) and 9 false cells (empty). The solve method then returns an array of characters representing a minimal sequence of moves that solves the puzzle. In other words, if the characters from the returned array are used in order as input to the move method on the Board object representing the initial configuration, the resulting board configuration represents the solved board. Furthermore, the solution must be minimal in the sense that there are no solutions…Imagine you have two classes: Employee (which represents being an employee) and Ninja (which represents being a Ninja). An Employee has both state and behaviour; a Ninja has only behaviour. You need to represent an employee who is also a ninja (a common problem in the real world). By creating only one interface and only one class (NinjaEmployee), show how you can do this without having to copy method implementation code from either of the original classes.What is the best way to go about this whole code with the given instructions?
