Question 4 Encapsulation is implemented by using__________ variable.
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Question 4
Encapsulation is implemented by using__________ variable.
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- If Class A inherits from Class B, we say that Class B is the subclass and Class A is the superclass. True FalseIn Java a class is allowed to inherit from as many superclasses as needed. True FalseGiven the following definitions: public abstract class Manager extends Employee {...} public class Executive extends Manager { ... } What kind of classes are Manager and Executive, respectively? Abstract, overridden O Abstract, concrete Abstract, final O Public, final
- Write an abstract class MovieSubscriber moviesRented(int num) abstract double getFee() Subclass RegularSubscriber and BonusSubscriber Regular subscriber gets 5 movies per month for $10, then pays $4 for each extra Bonus subscriber pays $12 per month and gets 9 movies included, then pays $3 for each extra. Test code: public static void main(String[] args) { MovieSubscriber bonus = new BonusSubscriber(); MovieSubscriber reg = new RegularSubscriber(); bonus.moviesRented = 15; reg.moviesRented = 15; System.out.println(bonus.getFee()); System.out.println(reg.getFee());----------------*********************--------------- Given an abstract class Car with abstract methods like getModel and getMaxSpeed. Create a class Suzuki with following characteristics Initialize member variable of Car class using the super constructor which contains two parameters model and speed. Implement getModel & getMaxSpeed method inside the Suzuki class which returns value of car model and speed. Input: Cervo 160 where, The first line contains a value of 'model'. The second line contains a value of 'speed'. Output: Cervo 160 Solution.java: import java.util.*; public class Solution { public static void main(String[] args) { //Code goes here } } ------------------------------------------------------------- entrypoint.cz: //Enter a <FILE-NAME>.java to be executed using the command //"java ClassName", where ClassName is the name of the class //contained in a selected <FILE-NAME>.java file. Solution.javaIn the following statement: public abstract class Vehicle extends DD implements Car{ . . .} DD can never be an abstract class. Select one: O True O False
- Instructions: Write your answer on a piece of paper with your name on top. Take a picture and submit within the allocated time limit. «interface Payable «abstract Person idno, name, age Student course, tuition, balance public double pay(double amount); Employee department, salary Given the class hierarchy: 1. Define the interface Payable. 2. Define the class Person that implements Payable and encapsulate. Override toString and equals. 3. Define Student and encapsulate. Override toString and equals. Implement pay(). pay() - deducts amount from balance and returns the new balance. 4. Define class Test. Declare an array of 10 Persons. Assume that Employee had already been implemented. Ask the user whether to create a student or an employee object.import bridges.base.ColorGrid;import bridges.base.Color;public abstract class Mark {// this is protected (rather than private) so that// subclasses of Mark can access itprotected Color color;/*Returns true if and only if the given Coloris the same as this Mark's Color. Two Colorsare considered the same if their Red, Green,Blue, and Alpha components are equal.c: the Color to check against*/public boolean isColor(Color c) {return false;}/*Draws this Mark onto the given ColorGridcg: the ColorGrid to draw onto*/public abstract void draw(ColorGrid cg);} import bridges.base.Color;import org.junit.Assert;import org.junit.Test;public class MarkTest {private static final Color B = new Color("black");private static final Color W = new Color("white");private static final Color U = new Color("blue");@Testpublic void isColorTest() {Mark m1 = new Point(0, 0, W);Mark m2 = new HorizontalLine(1, 1, 2,…Subject : object Orieted Programing ..Netbean Java Q: Write down an abstract class Time1 having attributes (hours, minutes, seconds), containing no argument constructor, 3 argument constructor. Write down an abstract function time() that increments seconds by 1 if seconds are equal to 60 then increment minutes by 1 and set seconds to 0. If minutes become equal to 60 then increment hours by 1 and set minutes to 0. Write a function that compare 2 time objects and return true if they are equal otherwise returns false.
- 1. Write a Graph class in Java. This class should represent undirected graphs. You can choose one of the representationsfrom graph exercises, eg object model, sets of nodes and edges, adjacency matrix, or soon, whichever you feel most comfortable with.● Include comments in your Java file to explain how nodes and edges are represented.● Assume that only one edge can exist between two nodes.● Assume that it is possible to have an edge connecting a node to itself, ie that a nodecan be connected to itself via an edge.● Because edges are undirected, an edge between v and w is also one between w and v.● Your constructor method should take one parameter: the number of nodes of thegraph. Add a method to your class: boolean addEdge that takes two parameters, v andw (representing two modes v and w which are connected together by the edgebeing added). If successful, the method should return true. The method should return false when it isunsuccessful, which is in the following cases: the edge is…1. Write a Graph class in Java. This class should represent undirected graphs. You can choose one of the representationsfrom graph exercises, eg object model, sets of nodes and edges, adjacency matrix, or soon, whichever you feel most comfortable with.● Include comments in your Java file to explain how nodes and edges are represented.● Assume that only one edge can exist between two nodes.● Assume that it is possible to have an edge connecting a node to itself, ie that a nodecan be connected to itself via an edge.● Because edges are undirected, an edge between v and w is also one between w and v.● Your constructor method should take one parameter: the number of nodes of thegraph. Add a method to your class: boolean addEdge that takes two parameters, v andw (representing two modes v and w which are connected together by the edgebeing added). If successful, the method should return true. The method should return false when it isunsuccessful, which is in the following cases: the edge is…Write a Java class Person for dealing with persons. Your class must have the following features: