An interface must meet which of these restrictions? I. It must not have any fields. II. Methods cannot have a void return type. II. It must not have any method implementations. IV. A class can implement only one interface. I and III O , II, and III O , II, and IV Il and IV O , II, II, and IV
Q: Assuming the Employee class has a sayName method that returns the employee's name (which is Fred),…
A: => An object is a blueprint of a class in the object-oriented programming language. =>…
Q: IN JAVA Which is true? A. Private members can be accessed by a class user B. A mutator is also…
A: A. is CORRECT as Private members can be accessed by a class user B. is INCORRECT as mutator is also…
Q: Write a Student class to get the desired output as shown below. 1. Create a Student class and a…
A: As the programming language is not mentioned as per our policy i am solving using the python…
Q: It is the ability of an object to have many forms? Select one: O a. Interface O b. Polymorphism O c.…
A: Interface :- In this function declared only there is no function body Inheritance :- class that…
Q: Q2. Write a program (Abstract+Interface) Define a class named Point containing: Two private…
A: Solution :: //==Point.java================== public class Point { private int x; private…
Q: Which of the following is true about Interface? Select one: O a. It is use to model multiple…
A: Answer:- d. All of these Explanation:- Interfaces has following property in java:- It is used to…
Q: Write a class encapsulating the concept of a student, assuming student has the following attributes:…
A: class Student { private String name; private int SSN; private double GPA; //…
Q: Create an HourlyEmployee class that inherits from Employee and has two new instance variables:…
A: public HourlyEmployee() { } public double getWage() { return wage; } public void…
Q: Assuming the Employee class has a sayName method that returns the employee's name (which is Fred),…
A: A object is a blueprint of a class in the object-oriented programming language. An object is a…
Q: 14. Which statements are true about the following code? (Choose all that apply) 1: interface…
A: A) In java interfaces can extend another interfaces just like classes, so it will compile. B) Yes,…
Q: Challenge exercise The following object creation will result in the constructor of the Date class…
A: To write constructor header with meaningful names to the parameters.
Q: Implement a class called BankAccount that is used to keep track of a bank account. This class will…
A: In the solution of given problem, we define the class BankAccount, with two private members id (int)…
Q: QUESTION 21 Given: public interface TestInterface { boolean errorState(); } Which methods are…
A: Option d is wrong Because we cannot extend an interface. Instead we need to implement an interface,…
Q: 2A. Create a Date class with three integer instance variables named day, month, year. It has a…
A: Create a class Date. Declare integer variables to hold the number of days, months and the year.…
Q: ANSWER IN JAVA: 3.14 (Date Class) Create a class called Date that includes three instance…
A: // Date.java public class Date { private int month; private int day; private int year;…
Q: Define and implement a class named animal that has the following constructor and attributes:…
A: Solution: Given, Define and implement a class named animal that has the following constructor…
Q: Which of the following statements specify the difference between an interface and a class? O A. All…
A: Java programming: Java is one of the programming languages. The java language is used to develop…
Q: 3. Which of the following statements is TRUE? A. It is necessary to create an object for a class…
A: A static class can only contain static data members, static methods and a static constructor.
Q: The Java feature in Q1 which create a new version of predefined method getPerimeter() is called…
A: ANSWER:- Polymorphism
Q: Create a class called Employee as a a derived class of the class Person. An employee record has an…
A: Below is the code in java as language is not mentioned and sample output:
Q: What is true about private fields of a class? They must be used with private methods. They are…
A: Q.1 What is true about private fields of a class? They must be used with private methods. They are…
Q: Write a class named Employee which implements Comparable Interface with name and salary as data…
A: Java program to create Employee and Manager class and build the given functionality.
Q: You can use the following method header to override the equals method in Object class: protected…
A: In the question as following they have provided a method header to override the equals() method-…
Q: Create a class, CallClass, with two methods to show call by value and call by reference. One method…
A: C#program to demonstrate Call by Value and Call by Reference methods.using System;namespace…
Q: Create a class called Employee as a a derived class of the class Person. An employee record has an…
A: Create a class called Employee as a a derived class of the class Person. An employee record has an…
Q: Define a class Job which has three property (name, salary, description) and two behavior (getSalary,…
A: ALGORITHM:- 1. Declare the Employee class. 2. Declare the two constructor method in the class. 3.…
Q: Which of the following is true about Interface? Select one: O a. It is a special kind of block…
A: Answer 1: Option d is correct Explanation: Interfaces define what a class must be able to perform.…
Q: Work on the following: Create three interfaces with the names "InterfaceOne," "IrnterfaceTwo," and…
A: In this question, we have to create three interfaces and classes. All the code is implemented below.
Q: Write a class named Taxicab that has three private data members: one that holds the current…
A: A Python docstring is a string used to document a Python module, class, function or method, so…
Q: Create a class, CallClass, with two methods to show call by value and call by reference. One method…
A: Java Code: Java code that has a class which have two methods. One method takes call by value and…
Q: What is the difference between abstract class and interface?
A: Note: There are multiple questions are given in one question. According to the rule, you will get…
Q: i. When inheriting an Interface from an Interface, the newly created Interface should include all…
A: ANSWER : Option a is correct answer. Classes cannot inherit from an interface, since an interface is…
Q: Create an interface that shall have 2 methods and one string type attribute, also create an…
A: Given: We are given a problem where we have to design an interface that contains 2 methods declared…
Q: What is the best first step to include in your implementation of equals(Object o) anytime you…
A: equals() Method helps to compare two Objects. It accepts an object as it’s parameter and then…
Q: Build a class called BankAccount that manages checking and savings accounts. The class has three…
A: we need to provide python code for given Bank Account class
Q: To implement an interface, a concrete class must implement AT LEAST ONE method headings listed in…
A: Required: To implement an interface, a concrete class must implement AT LEAST ONE method headings…
Q: Create a class Course, which has one field: String courseName Create the constructor, accessor,…
A: public class Course{ private String courseName; //Constructor Course() {…
Q: Question 4: You have an interface ICar, with a method drive(); a. You have classes BMW, and Mercedes…
A: An interface in the Java programming language is an abstract type that is used to specify a behavior…
Q: Write a class that tests and demonstrates that your Candidate and Election classes implement the…
A: The code for the above given question is given below:
Q: Which statements are true about the following code?
A: interface HasVocalCords { //create an interface public abstract…
Q: Say there's an abstract class named Solid. A Sphere class extends Solid. Which line(s) of code will…
A: s1, s2, s3 are of type Solid Memory Allocation is done using new keyword
Q: Write a class called person, which contains: A private class variable, Counter, initialized with…
A: //C++ program#include <iostream> using namespace std; class person{ //class variable…
Q: Which of the following is true of abstract classes? a.An abstract class cannot have child classes…
A: Abstract class: is a restricted class that cannot be used to create objects (to access it, it must…
Q: Assume you have three interfaces I1, I2 & I3. The definition of these three interfaces is given…
A: The Following scenario is implemented in Java. The user can use any other language just change the…
Q: I have provided you with 3 interfaces (HasLegs, HasWings, and BreathesUnderwater) and a Tester…
A: In general, an interface is a tool or a device that unrelated entities use to interact.
Q: For this exercise, you need to implement two (2) classes, the Rectangle class and the RectangleTest…
A: Since here no programming language is specified so we are providing the solution in Java. The…
Q: Build a class called BankAccount that manages checking and savings accounts. The class has three…
A: import pickle import os import pathlib class Account : accNo = 0 name = “ deposit=0 type…
Q: 1.Which is true for valid type cast? A:creates a new object with a new type B:creates a referenc…
A: Note: we are only allowed to solve three subparts in one question. to get answers to others, please…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 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 experiencedTo implement an interface, a concrete class must implement AT LEAST ONE method headings listed in the definition of the interface. False. True.Q# A program that has no graphical user interface and only takes input through the command line only has a model and a controller. It does not have a view. The answer: is FALSE. Please explain with example. Q# What is NOT an effect of the SOLID principles? The answer: A high-level class depends on specific low-level classes and not interfaces. Please explain why. Q# Assume you are considering writing a method and are deciding what should happen when given input that is outside of perfect input. Which of the following is not a way to handle this? Answer: Use better JUnit testing. Subject: Java Programming
- 1. Create abstract class Pet , which is the abstract super class of all animals.1. Declare an integer attribute called legs, which records the number of legs for this animal.2. Define a constructor that initializes the legs attribute.3. Declare an abstract method eat.4. Declare a concrete method walk that prints out something about how the animals walks (include the number of legs).2. Create the Dog class that implements Pet class.1. This class must include a String attribute to store the name and food of the pet2. Define a default constructor that calls the super class constructor to specify that all dogs have 4 legs and name.3. override the eat and walk method.3. Create the Cat class that Implements Pet class.1. This class must include a String attribute to store the name of the pet, and a string to save food .2. Define a constructor that takes one String parameter that specifies the cat's name. This constructor must also call the super class constructor to specify that all cats have…JAVA PROGRAMMING - Create a class named "Shape" that has rhe abstract methods getArea() and getPerimeter(). - Create a class named "Rectangle", "Square", and "Circle". Override the methods getArea() and getPerimeter() with the right equation in getting the area and perimeter. - For rectangle, create attribute length and width. For square, side. For circle, radius Inputs: 1. Char input for Shape Type (Rectangle, Square, Circle). 2. Dimensions for specific type of Shape Output: Shape: Rectangle Length: 10 Width: 50 Area: 500.00 Perimeter 120.00When a class implements an interface with default methods and overrides them, the class inherits the default methods’ implementations. An interface’s designer can now evolve an interface by adding new default and static methods without breaking existing code that implements the interface. State whether the statement is true or false. If false, explain why.
- Need an example of this format in java programming in eclipse Create a class 1. Define instance data fields 2. Define a constant properly; use the constant when needed 3. Define a constructor that receives parameters for instance data 4. Generate get and set methods for instance data (even though some methods may not be used) 5. Define 4 other methods • method one will not receive any parameters, but will return a value to the driver program • method two will receive one parameter, and will also return a value to driver program • method three will receive one parameter, and will also return a value to driver program • method four will receive 3 parameters from driver program and will be responsible for displaying all output B. Create a driver program 1. Instantiate objects passing specific data to the programmer written constructor 2. Call each of 3 methods, for each instantiated object, passing any required arguments, and saving any values being returned in a variable 3. Call the 4th…To implement an interface, a concrete class must implement AT LEAST ONE method heading.False.True.TECHNICAL REQUIREMENTS 1. The program must utilize at least two classes. a. One class should be for a player (without a main method). This class should then be able to be instantiated for 1 or more players. b. The second class should have a main method that instantiates two players and controls the play of the game, either with its own methods or by instantiating a game class. c. Depending on the game, a separate class for the game may be useful. Then a class to play the game has the main method that instantiates a game object and 2 or more player objects. 2. The game must utilize arrays or ArrayList in some way. 3. There must be a method that displays the menu of turn options. 4. There must be a method that displays a player's statistics. These statistics should be cumulative if more than one game is played in a row. 5. There must be a method that displays the current status of the game. This will vary between games, but should include some statistics as appropriate for during a game.…
- A. Create a program by using OOP concept 1. Create a 1 Parent class and implement it to 2 Child class 2. Inside the parent class create 4 methods and 3 abstract methods. 3. Inside the child class create at least 2 unique methods and constructor with at least 2 parameters. 4. Call all the methods from the Parent and child class by using object. 5. Call also the constructor of the child class.T/F1. Interface classes cannot be extended but classes that implement interfaces can be extended.1. Create a Student class that implements the Person interface. As well as storing the students name and email, also store their course grade (e.g A, B, C) in a member variable. The grade should be accessible via a getGrade method. For the implementation of getDescription return a message along the lines of “A C grade student”, substituting the students actual grade.2. Create a Lecturer class that implements the Person interface. This class should also store the subject that the lecturer teaches. Add a getSubject method, and implement getDescription so that it returns a suitable message, e.g. “Teaches Biology”.3. Create a third class, Employee that implements the interface. This should also store the name of the department the Employee works in (available via getDepartment). Again, getDescription should return a suitable message.
