Given the following code: } public class Foo { public void barl () { public abstract void bar2 (); OO You can't mix abstract and non-abstract methods in a class so this would generate a compiler error. void abstract static
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
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- What is included in the method private void buildLetterTable() { implemented in the class AnagramsAnswer the given question with a proper explanation and step-by-step solution. public class MainClass{ public static void main(String[] args) { SomeClass myObject = new SomeClass(4, 5); int fred = SomeClass.SOME_VALUE; int barney = myObject.method1(); int wilma = SomeClass.method2(4); }} Which of the following is a static variable a method1 b method2 c SomeClass d SOME_VALUE e This cannot be determined by examining the above codeWrite a java code that: a) Creates an abstract method in a superclass, then overrides it in a subclass. (Only show the methods in both classes). b) Provides a method PrintInfo () that prints your group info and can be used only in classes of the same package. c) Provides a non-overridden area() that calculates area. (choose a shape)
- Java program Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add an instance variable, named department, of type String. Supply a method toString that prints the manager’s name, department, and salary. Make a class Executive inherit from Manager. Supply appropriate toString methods for all classes. Supply a test program that tests these classes and methods.Implement all the classes using Java programming language from the given UML Class diagram. Note: This problem requires you to submit just two classes: Circle.java, Circle.java, Rectangle.java, Square.java. Do NOT include "public static void main()" method inside all of these classes. Write a superclass called Shape (as shown in the class diagram), which contains: Two instance variables color (String) and filled (boolean). Two constructors: a no-arg (no-argument) constructor that initializes the color to "green" and filled to true, and a constructor that initializes the color and filled to the given values. Getter and setter for all the instance variables. By convention, the getter for a boolean variable xxx is called isXXX() (instead of getXxx() for all the other types). A toString() method that returns "A Shape with color of xxx and filled/Not filled". Write a test program to test all the methods defined in Shape. Write two subclasses of Shape called Circle and Rectangle, as…Given the following class. (JAVA) public class FamilyMember { public String drink( ) {return “cup”;} public String eat( ) {return “fork”;} } Write a Baby class that is derived from the FamilyMember class. The Baby class has an instance variable for the age, a default constructor, and a constructor that accepts an integer. Include any other necessary methods. If a baby is older than 3 years, print that “it eats with its fork”; otherwise, “it eats with its hands”.
- *using java* Create a class AnimalCreate a class Cat, and a class Dog, and a class Bearded Dragon which extend Animal. Add to your Animal class: Member: name Methods: Public Animal(String name) //constructor public void makesSound()with the implementation printing out a generic animal sound. Next, override (add) the makesSound()method to your Cat and Dog class, with the implementation specific to each animal (i.e, cat says purr..). Do not override the makesSound() for your Dragon (bearded dragons don’t make sounds!)Note, you’ll also need a constructor in each of your subclasses which calls super(name) to initialize the common ‘name’ member of Animal. --- Next (in your test harness) create a List of different Animals ( a couple cats, a dog, a dragon... ) and add these Animals to your list. Iterate through your list & call makeSound on each. ( you should observe the implementation of the makeSound() method called will be: cat -> from Cat class, dog-> from Dog class,…Explain the following Java Interface code in details.interface A{public void m1();}abstract class B{public B(){System.out.println("Inside the Constructor of class B");}abstract public void m2();}class C extends B implements A{public C(){System.out.println("Inside the Constructor of class C");}public void m1(){System.out.println("Inside m1 method");}public void m2(){System.out.println("Inside m2 method");}}public class InterafceAbstractTest{public static void main(String args[]){C c = new C();c.m1();c.m2();//A a = new A();B b;b=c;//b.m1();b.m2();A a;a=c;a.m1();//a.m2();}}Create an interface Wheel with methods setWheels (int c) and getWheels () and a class Vehicle with abstract methods getColor () and getBrand (). Now, create a concrete class Taxi with additional method setDriver (String name) that inherits both Wheel and Vehicle. (Note: Concrete classes don’t have any abstract method)
- In Java: Implementing a Superclass Employee Part 1: Implement a superclass Employee that has the following fields and methods. Fields: string firstName string lastName int employeeID double salary Methods: constructor method - initialize salary field to zero. setters and getters for firstName, lastName, and employeeID employee Summary method - prints all account attributes Part 2: Implement a Manager class that inherits from the Employee class. Fields: string department a Methods: employeeSummary method - prints all superclass and subclass attributes Ensure that your program has the two required classes and a test class.What is an abstract class? Choose only one option.(a) An object(b) A class with no methods.(c) A class with no concrete subclasses.(d) A class with at least one undefined message.(e) An interface.Write in java code: a) Write class Vehicle that is superclass and abstract write only one line in the class declaration(first line):b) Class Vehicle is a superclass that contains three non-abstract methods (three methods that are concrete, implemented in the class Vehicle); then class Vehicle cannot be abstract; T/F?c) The first step in problem-solving process is the Requirement Analysis ; T/F?d) Write the method salary1() that is abstract with two parameters (integer and double):e) The final method is a method in the super class that cannot be overridden in its subclasses; T/F?