True or False ___(10) You only need to override methods you need in an interface while ignoring other methods that you don’t use. ___(11) In Java the expression instanceof returns a boolean value. ___(12) One of the most important benefit of using inheritance in Java is the reuse of code
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- True or False 1) After a user defines his/her own constructor in a Java class, the default constructor is still available. ___(2) Java supports multiple inheritances directly. ___(3) Some methods in an interface can have method body.Design/code/test a Java program containing an abstract the class absWelcome. This class should contain: 1. A public abstract void method (you name it) that is empty 2. A public regular method (you name it) that prints "Welcome to " Next, create a subclass clsHello that extends absWelcome. This class should contain: • A public regular method (you name it) that prints "Java Programming" Finally, inside the Main class create an object (you name it) from the clsHello class. Use this new object reference to: 1. Output "Welcome to " from the abstract class 2. Output "Java Programming" from the subclass Your output should resemble that shown below >sh -c javac -classpath -type f-name '*.java') java -classpath :targe Welcome to Java ProgrammingInheritance The more general class is typically known as the parent class, super class, or base class. The more specific class is typically known as the child class, sub class, or derived class. The Java keyword extends allows you to indicate that one class should be the child class of the original parent class. The child will then inherit everything from the parent class, including variables and methods. {0} Online (1) Main.java x Student.java public class Main { 1 2 3 4 5 6 Run V 7 8 9 10 11 12 13 14 } public static void main(String[] args) { /* Person class example */ Person teacher = new Person(); teacher.setName("Laurel"); System.out.println(teacher); } Reid Moseley X Person.java x /* Student class example */ Student student = new Student (); student.setName("Alice"); System.out.println(student); CONSOLE SHELL Name: Laurel Name: Alice Reset to Template Open Desktop
- True or False A class can implement more than one interface.Objective: At the end of the activity, the students should be able to: Create a program that exhibits inheritance and Software Requirements: Latest version of NetBeans IDE Java Development Kit (JDK) 8 Procedure: Create four (4) Java classes. Name them RunEmployee, Employee, FullTimeEmployee, PartTimeEmployee. The RunEmployee class shall contain the main method and will be used to execute the Write a simple payroll program that will display employee’s information. Refer to the UML Class Diagram for the names of the variable and method. This should be the sequence of the program upon execution: Ask the user to input the name of the Prompt the user to select between full time and part time by pressing either F (full time) or P (part time). If F is pressed, ask the user to type his monthly salary. Then, display his name and monthly salary. If P is pressed, ask the user to type his rate (pay) per hour and the number of hours he worked for the entire month separated by…Objective: At the end of the activity, the students should be able to: Create a program that exhibits inheritance and Software Requirements: Latest version of NetBeans IDE Java Development Kit (JDK) 8 Procedure: Create four (4) Java classes. Name them RunEmployee, Employee, FullTimeEmployee, PartTimeEmployee. The RunEmployee class shall contain the main method and will be used to execute the Write a simple payroll program that will display employee’s information. Refer to the UML Class Diagram for the names of the variable and method. This should be the sequence of the program upon execution: Ask the user to input the name of the Prompt the user to select between full time and part time by pressing either F (full time) or P (part time). If F is pressed, ask the user to type his monthly salary. Then, display his name and monthly salary. If P is pressed, ask the user to type his rate (pay) per hour and the number of hours he worked for the entire month separated by…
- Problem Description and Given Info For this assignment you are given the following Java source code files: IStack.java (This file is complete – make no changes to this file) MyStack.java (You must complete this file) Main.java (You may use this file to write code to test your MyStack) You must complete the public class named MyStack.java with fields and methods as defined below. Your MyStack.java will implement the IStack interface that is provided in the IStack.java file. You must implement your MyStack class as either a linked list or an array list (refer to your MyArrayList and MyLinkedList work). Your MyStack must not be arbitrarily limited to any fixed size at run-time. UML UML CLass Diagram: MyStack Structure of the Fields While there are no required fields for your MyStack class, you will need to decide what fields to implement. This decision will be largely based on your choice to implement this MyStack as either an array list or a linked list. Structure of the Methods As…public interface IDate{ * Since this is the first interface you will use, a couple of notes: * 1) Do not edit this document. Any changes will be done and then re-uploaded * 2) In additon to implementing all of the following methods you need a detailed Constructor nt month, int day){... Implementation not shown...); * 3) The following needs to be added to your header: implements IDate public class Date implements IDate{ * 4) There will be a tester file for this project. Write it to specifications, or it will not work! * 5) You will need to store 3 integers representing day, month and year I also stored an int array that stores the days of the month! */ //Moves this IDate forward in time by the given number of days public Date(int year, int month, int day) { public void addDays(int days) { //Moves this IDate forward in time by the given number of weeks //This one is easy once you have done addDays! public void addWeeks(int weeks) { //Returns the number of days that this Date must be…Task Performance A Simple Payroll Program Objective: At the end of the activity, the students should be able to: Create a program that exhibits inheritance and polymorphism. Software Requirements: Latest version of NetBeans IDE Java Development Kit (JDK) 8 Procedure: 1. Create four (4) Java classes. Name them RunEmployee, Employee, FullTimeEmployee, PartTimeEmployee. The RunEmployee class shall contain the main method and will be used to execute the program. 2. Write a simple payroll program that will display employee's information. Refer to the UML Class Diagram for the names of the variable and method. This should be the sequence of the program upon execution: a. Ask the user to input the name of the employee. а. b. Prompt the user to select between full time and part time by pressing either F (full time) or P (part time). c. If F is pressed, ask the user to type his monthly salary. Then, display his name and monthly salary. С. If P is pressed, ask the user to type his rate (pay) per…
- T/F 3. Any Java class must have a main method, which is the first method that is called when the Java class is invoked.java oop languageCreate a Java class that describes a product in a store with relevant fields. A few examples of such fields would be name, brand, etc. Append the class with methods that allow a customer to buy that product and append the number of times the product is sold. The customer will be subjected to 13% tax on each buy, you will calculate the payable amount and display it on the console on each buy.C# Program Create program that computes student average Requirements:1. Use inheritance2. Use exception handling if applicable3. Create a class student4. Use the constructor method to collect the student information: name, math, science and english grade (User should be able to input student info)5. Create a method that computes the average6. Create another method that outputs (similarly to) the ff. when calledName: AnnaMath: 92Science: 92English: 92Average: 927. Instantiate a Student object and utilize the defined methods.