Java. Create an abstract class to represent Employees according to the UML Diagram.
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Java.
Create an abstract class to represent Employees according to the UML Diagram.
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- Java Programming Object-Oriented Programming In an abstract class, write a factory method for creating a category of object of your choice (aside from furniture). Also, write the class representing that category.b) Write the child classes that are necessary to create 3 different types of objects that belong to that categoryQUESTION 5 All methods in an abstract class must also be declared abstract. True False QUESTION 6 All fields declared in an interface are treated as final and static have protected access must be initialized in the class implementing the interface have private accessUsing c++ Design a Wacky class that can be used to generate a message based on the information passed to it. The class should have a single integer private member variable: int num; Design the complete class so that if: an object is created with no parameters; num is initialized to 10. an object is created with 1 parameter that is an integer; num is initialized to the integer that is passed *2 an object is created with 1 parameter that is a double; num is initialized to the double *4 an object is created with 2 parameters, a char and a string; it prints the message "That's WACKY!"
- language: Java Class Inheritance with an abstract class Define a class Employee with the following fields: _name, _empId, _department, _position (_title), _yearlySalary, _fullTime (a boolean: true/false) , _month , _year (time of hire) Add constructor and properties Define an abstract method GetBiMonthlySalary() (if the employee is paid twice a month) Define an abstract method GetVacationTime() that returns the number of vacation time this employee would have based on time of hire Override the ToString() method to return a string that contains the information pertaining to an employee such as name, empId, department, and where full time or not. Define a class HourlyEmployee that inherits from Employee. This class should have 2 fields of its own: _hours (hours worked in half a month) and _wage (hourly wage) Provide necessary constructor, properties and methods Override the ToString() to also return the additional fields Gets 3 days of vacation after first year if the…Person and Customer Classes Write a class named (Person) with data attributes for a person’s name, address, and telephone number. Provide accessors/getters and mutators/setters for each attribute. Write a displayPerson() to print out the attributes of the Person. Next, write a class named (Customer) that is a subclass of the (Person) class. The (Customer) class should have a data attribute for a customer number, and a Boolean data attribute indicating whether the customer wishes to be on a mailing list. Provide accessors/getters and mutators/setters for each attribute. Write a display customer() to print out the attributes of the Customer. Demonstrate an instance of the (Customer) class in a simple program.Write code in java to solve the following problems. Question 1: Most important Class in Customer Relationship Management (CRM) System is indeed Customer. Customer class can have fields: Name, ID, Gender, Contact Number & Address The member functions include the getters and setters for all the member variables and display) function to display the data. Customer |- ID: int - Name: String - Gender: String - ContactNumber: String - Address: String +>Customer() +getters and setters +display (): void In the main function, first create two Customer objects and allow the user to enter data in these objects. Secondly, display the data from these objects.
- QUESTION 16 What must be true of a class with one abstract method? O The class must also implement the Iterable interface Any derived class must implement the method The abstract method must have the static modifier O The method cannot specify a return value QUESTION 17 Suppose we wanted to design a set of classes for a veterinarian's office. Our Customer class looks like this: public class Customer { Pet [] pets; } Select all the statements that are true Once the size of the pets array has been set, it cannot be changed Because we're using an array, all pets must be the same A customer must have at least one pet We also need to declare a Pet class QUESTION 18 What is the proper use of an enumeration? To define a set of ordered values To enforce the use of the Comparable interface O To define, or enumerate, the values returned by a Random object generator O To define the classes in an inheritance hierarchyWhen a concrete class inherits from an abstract class, you have to implement all abstract methods declared in the super class before you can instantiate it (the concrete class). True FalseWrite a java This class must implement the model in the following UML class diagram. Account -balance: double +Account(init_balance : double) +getBalance( ): double +deposit(amount : double) Diagram object’s description: balance holds the current balance of the bank account Account sets balance to init_balance get balance retrieves the current balance deposit adds the amount parameter to the current balance (Hint: “-“ indicates private and “+“ indicates public)
- A subclass of an abstract class must be able to do all of the things the parent class can do. True or not?Create a UML diagram to help design the class baby. class Baby{ //data members private String name; private int age; //default constructor Baby() { name = "xyz"; age = 3; } //parameterized constructor Baby(String n,int a){ name = n; age = a; } //sets name public void setname(String n){ if(n.isEmpty()) name = "xyz"; else name = n; } //sets age public void setage(int a){ if(!(a>=1 && a<=4)) age = 2; else age = a; } //returns name public String getname(){ return name; } //returns age public int getage(){ return age; } //check if two objects have same name and age public boolean equals(Baby b){ if (age==b.getage() && name.equalsIgnoreCase(b.getname())) return true; else return false; } } public class Main { public static void main(String[] args) { //two objects of type Baby Baby A=new Baby("abcd",3); Baby B= new Baby("abcd",3); //print information of object System.out.println("Name:" + A.getname() + " age:"+ A.getage()); //call equals on obejct…Interfaces are used to define stronger is-a relationships because one class can inherit multiple interfaces. Ture or false