Answer the missing java default constructor below. public class Employee{ //provide the default constructor }
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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:
Answer the missing java default constructor below.
public class Employee{
//provide the default constructor
}
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- in java Consider the following class: 1.Write its default constructor 2.Write a code to declare an object from this class using the default constructor public class Dog { String name; String color; void barking() { } void hungry() { } void sleeping() { } }Can we override static methods of a class?Define a java Name class with attributes: String firstname, middle name, lastname. Include the following methods: - A constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. - getter and setter methods for all attributes - override toString method Define a class called DebitCard. A debit card has a card number, Name and balance. a) Include a constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. b) Include getters/setters for all attributes. c) Add the following member functions: float inquireBalance() float depositCash(float amount) //increases the balance with amount boolean withdrawCash(float amount) // returns true if sufficient amount is available for withdrawal and decreases the balance by amount float interest(float rate) //calculates the interest rate incurred. Assume the parameter rate is considered as…
- Define a java Name class with attributes: String firstname, middle name, lastname. Include the following methods: - A constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. - getter and setter methods for all attributes - override toString method Define a class called DebitCard. A debit card has a card number, Name and balance. a) Include a constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. b) Include getters/setters for all attributes. c) Add the following member functions: float inquireBalance() float depositCash(float amount) //increases the balance with amount boolean withdrawCash(float amount) // returns true if sufficient amount is available for withdrawal and decreases the balance by amount float interest(float rate) //calculates the interest rate incurred. Assume the parameter rate is considered as…Please fill in all the code gaps if possible: (java) public class valueData { private String variable; private double value; // Define the constructor: // Define the getter and setter: // Define the toString method: }The following code is in Java: public class Vehicle // Superclass { private double cost; (Other methods . . .) // assume these are given and they’re OK. } // Subclass public class Car extends Vehicle { public Car(double c) { cost = c; } }1) What is the problem with the code?2)How can it be fixed?
- True or False a. If you do not write a constructor for a class, java will supply a default constructor. b. Java does not allow constructors to be overloaded. Abstract methods must have a void return type. d. All classes have a default equals (Object) method even if their programmer didn't write one for it. You can override a static method defined in a superclass. A method can have at most one return statement. g. A method cannot return a Wrapper class reference. h. The reserved word super can be used to access a constructor in a parent class. i. Object is an abstract class. e. f.Subject: Java Programming Question#1: Define an abstract class LivingBeing. Define abstract methods breath, sleep, eats. Define Subclasses Animal and Plants. Override the base methods and call them polymorphically.Note: Java Programming Complete the following code. public class Student { int marks; int age; //create default constructor, set marks=60, age=19 //define getters / setters for marks and age } public class Test { public static void main (String []) { //create two students objects //input and set marks and age for two students //using getter to print marks and age of students } }
- // Is my code correct? //please make it more efficient as you can. Thank you //please correct it if there is some mistakes public class PartTimeEmployee extends Person { //private variables private double payRate; private double hoursWorked; public PartTimeEmployee() { super(); /*invokes the default constructor of class Person */ payRate = 0; hoursWorked = 0; } public PartTimeEmployee(String idPerson, String nameFirst, String nameLast, String date, String addressPerson, double pay, double hours) { super(idPerson, nameFirst, nameLast, date, addressPerson); /*invokes the non-default constructor in other words, override the parameters from Person() non-defaukt with another set of parameters, example 'idPerson' variable overrides 'id' in Person() */ this.payRate = pay; this.hoursWorked = hours; } public String toString(String idPerson,…Using any application of your choice, write a Java program that meets the following requirements: It has an abstract class that contains a student number; Include get() and set() methods for the abstract class where the student number is set/get; Create three child classes, for firstYear, secondYear and thirdYear. Each class must display a distinct announcement for first years, second years and third years.class A{ void methodA(){} void methodB(); } class B extends A{ void methodA(){ } } class A should be abstract methodB should be abstract both a and b both classes are okay