Employing inheritance reduces errors because ____________ .a. the new classes have access to fewer data fieldsb. the new classes have access to fewer methodsc. you can copy and paste methods that you already createdd. many of the methods you need have already been used and tested
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Employing inheritance reduces errors because ____________ .
a. the new classes have access to fewer data fields
b. the new classes have access to fewer methods
c. you can copy and paste methods that you already created
d. many of the methods you need have already been used and tested
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- A SuperDie Class Write a class SuperDie that models a single die with an arbitrary number of sides, not just six. A die instantiated with the default constructor has six sides. The methods of this class should be: • roll a die and return its value, • return the number of sides on a die, and • change the number of sides on a die. Include a main(...) method that tests all the methods of your class.A Door Class A computer game usually has many different objects that can be seen and manipulated. One typical object is a door. Whether a player runs through a castle, attacks the forces of an evil empire, or places furniture in a room, a door often comes into play. Implement a Door class as described below as well as a TestDoor class that instantiates three Door objects labeled “Enter,” “Exit,” and “Treasure.” The “Enter” door should be left unlocked and opened. The “Exit” door should be left closed and locked. The “Treasure” door should be left open but locked. A Door class A Door object can • display an inscription, • be either open or closed, and • be either locked or unlocked. Here are some rules about how Door’s work. • Once the writing on a Door is set, it cannot be changed. • You may open a Door if and only if it is unlocked and closed. • You may close a Door if and only if it is open. • You may lock a Door if and only if it is unlocked, and unlock a Door if…java You are part of a team writing classes for the different game objects in a video game. In this assessment you are given a superclass (Human.java), two subclasses (Warrior.java and Wizard.java) and a test application (TestGameObjects.java). Both the Warrior and the Wizard classes need to be able to calculate stealth. This needs to be done in the method getStealth. This method has an integer parameter (dexterity) and returns an integer. Refer to the test application to see how the method is used. The Warrior and Wizard classes calculate stealth differently: The Warrior's stealth is equal to dexterity times strength (dexterity * strength) while the Wizard's stealth is equal to three times dexterity times intelligence (3 * dexterity * intelligence). You need to write an interface with the method getStealth, and then modify the superclass and subclasses to implement this interface. You also need to test the validity of the object ID. The object ID must consist of the character 'W'…
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- Write the Circle class:• A Circle has a radius– Add instance variable– 2 constructors – one should be the default or no args– Add accessor and mutator method for each instance variable– Add methods to calculate Area, Perimeter, and Diameter– Write a printArea method in the main program which receives an object circleand “times” integer– printArea() will print the radius and area of objects “times” time by changingthe radius of object.public static void printAreas(Circle c, int times) {System.out.println("Radius \t\t Area");while (times>=1) {//print the radius and area here// create a new object by changing the radius heretimes--;}}//end of printAreasZOOM + Press Esc to exit full screen Create a new java project named CH46EX 1. Create a class named Student 1. 2 private instance data fields – student name, student id 2. 1 final and static constant for a COLLEGE, set to "Fullerton" Create one programmer written constructor that accepts parameters for two instance data fields during instantiation Create a static method named demoStaticMethod ()-see output 3. | - print message, print college 4. Create a non-static method named demoObjectMethod ()– see output - print message, college, student name, student id 2. Create an application named StudentDemo 1. Create/instantiate 1 student object 2. Call each method correctly This demo is a static method Fullerton 3. Expected Output > This demo is a non-static method Fullerton Name: Wyle Coyote ID: 456Java Programming Create your own class that illustrates the use of encapsulation. Make sure to include at least one setter and one getter for the class
- Code In Java NetBeans Q: Create an Inventory system program which has the following classes: A) . A Date class that includes three instance variables, a month, a day, and an year. Provide a constructor that initializes the three instance variables, validating the values. Provide a toString method that displays the day, month, year separated by the forward slash(/).Create an Employee Class that will have Two instance variable: name and workingPeriod A class method named employeeByJoiningYear(): • To create an Employee object by joining year for calculating the working period o it will have two Parameter name and year • A static method experienceCheck() to check if an Employee is experienced or not o It will take working period and gender as parameter o If an employee's working period is less than 3, he or she is not experienced [You are not allowed to change the code below] # Write your code here employee1 = Employee('Dororo', 3) employee2 = Employee.employeeByJoiningYear('Harry', 2016) 6 print(employee1.workingPeriod) print(employee2.workingPeriod) print(employee1.name) print(employee2.name) print(Employee.experienceCheck(2, "male")) print(Employee.experienceCheck(3, "female")) Оutput 3 Dororo Harry He is not experienced She is experiencedJAVA PROGRAMMING Write two java files for this assignment: Circle.java, and Main.java. The Circle.java file will create an actual class. The Circle class: MEMBER VARIABLE double radius double x double y Eight methods: Six of the methods are simple: getter’s and setter’s for x, y, and radius. There should also be a getArea method that returns the area (derived from the radius) A doesOverlap method. This method should accept a Circle as an argument, and return true if this circle overlaps the circle that the method was invoked on. [Note: two circles overlap if the sum of their radius' is greater than or equal to the distance between their centers.] void setX(double value) double getX() void setY(double value) double getY() void setRadius(double value) double getRadius() double getArea() boolean doesOverlap(Circle otherCircle) second class will be the typical replit Main class, with its static main method .It should contain code that tests the Circle class. submit code that…