QUESTION 3 Consider public class MyClass public MyClass({/code/} // more code... To instantiate MyClass, you would write? MyClass mc = new MyClass(); O MyClass mc = MyClass; O MyClass mc = MyClass); %3D O MyClass mc = new MyClass;

QUESTION 3 Consider public class MyClass public MyClass({/code/} // more code... To instantiate MyClass, you would write? MyClass mc = new MyClass(); O MyClass mc = MyClass; O MyClass mc = MyClass); %3D O MyClass mc = new MyClass;

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…
Given the definition of the Person and Student classes below, public class Person public String m name; protected int m age; public Person(String name, int age) ( m name name: m age age: public int getAge (){ return m age; public class Student extends Person private double m gpa: public Student (String name, int age, double gpa) ( m goe gpa: ( u) zadns public veid decrEnentAge () m age--7 and the following statements: Person p- sew Person("Joe Dae", 25): Student s - new Stuadent (Jans Doe", 20, 3.45); Strine name; nt age indicate which of the following statements are lilegalL and which are legal. p.decrementAge0: age - D.getAge age = s getAget je name p.m name: 2 legal sdecrementAgel. gpa 5.m. gpa. 000000
Consider the following class: public final class Midterm{ int x 1; public Midterm(){} } What can be said of this class? Select all of the true statements about it. Midterm is a valid reference data type. That is, you can have variables of type Midterm. Midterm is a concrete class. That is, you can create actual Midterm objects. Subclasses of Midterm are valid reference data types. Once a Midterm object is created it cannot be modified.
interface StudentsADT{void admissions();void discharge();void transfers(); }public class Course{String cname;int cno;int credits;public Course(){System.out.println("\nDEFAULT constructor called");}public Course(String c){System.out.println("\noverloaded constructor called");cname=c;}public Course(Course ch){System.out.println("\nCopy constructor called");cname=ch;}void setCourseName(String ch){cname=ch;System.out.println("\n"+cname);}void setSelectionNumber(int cno1){cno=cno1;System.out.println("\n"+cno);}void setNumberOfCredits(int cdit){credits=cdit;System.out.println("\n"+credits);}void setLink(){System.out.println("\nset link");}String getCourseName(){System.out.println("\n"+cname);}int getSelectionNumber(){System.out.println("\n"+cno);}int getNumberOfCredits(){System.out.println("\n"+credits); }void getLink(){System.out.println("\ninside get link");}} public class Students{String sname;int cno;int credits;int maxno;public Students(){System.out.println("\nDEFAULT constructor…
public class OfferedCourse extends Course { // TODO: Declare private fields // TODO: Define mutator methods - // setInstructorName(), setLocation(), setClassTime() // TODO: Define accessor methods - // getInstructorName(), getLocation(), getClassTime() } import java.util.Scanner; public class CourseInformation { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); Course myCourse = new Course(); OfferedCourse myOfferedCourse = new OfferedCourse(); String courseNumber, courseTitle; String oCourseNumber, oCourseTitle, instructorName, location, classTime; courseNumber = scnr.nextLine(); courseTitle = scnr.nextLine(); oCourseNumber = scnr.nextLine(); oCourseTitle = scnr.nextLine(); instructorName = scnr.nextLine(); location = scnr.nextLine(); classTime = scnr.nextLine(); myCourse.setCourseNumber(courseNumber); myCourse.setCourseTitle(courseTitle);…
Code a subclass named ExpressCard that inherits from the superclass CreditCard, which has two private data members: foreignFeeRate of double type, and domesticBonusMileageRate of double type Provide: default constructor with no parameters, constructor with all parameters to initialize its own private data and the inherited data from CreditCard getter/setter methods for each data member There are two effector methods: Method calcFee() takes no parameters and it returns double type. This method calculates the transaction fee. First you need to call the method in superclass to obtain the basic fee, and then for ExpressCard user, there is an extra charge for foreign spending. Given the same example above as in class CreditCard, the basic fee is $3, and under a foreignFeeRate of 3%, then the extra fee is calculated by multiplying $50 of foreign spending with 3% (0.03) of foreignFeeRate, which yields $50 *0.03 = $1.5, so the total fee is $3 + $1.5 = $4.5. Method calcMileage() takes no…
What is inherited in a subclass from its superclass? O class members O constructors class members and constructors O private methods O attributes and constructors O None of the above.
3. Add a "DateOfBirth" property to the given Person class, which is of type "DateTime". 1 using System; 2 public class Person { public Person(string firstName, string lastName) { 3 4 FirstName = firstName; 5 LastName = lastName; } public string FirstName { get; set; } public string LastName { get; set; } public string GetFul1Name() { 7 8 10 return FirstName + + LastName; } 12 } 11 13 14 public class Program { public static void Main() { 15 16 } 18 } 17
public class Cat extends Pet { private String breed; public void setBreed(String userBreed) { breed = userBreed; } public String getBreed() { return breed; }} public class Pet { protected String name; protected int age; public void setName(String userName) { name = userName; } public String getName() { return name; } public void setAge(int userAge) { age = userAge; } public int getAge() { return age; } public void printInfo() { System.out.println("Pet Information: "); System.out.println(" Name: " + name); System.out.println(" Age: " + age); } } import java.util.Scanner; public class PetInformation { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); // create a generic Pet and a Cat Pet myPet = new Pet(); Cat myCat = new Cat(); // declare variables for pet and cat info String petName, catName, catBreed; int petAge,…
^ Which of the following elements of a parent class are NOT be inherited by a child class in Java? Opublic constructors protected static attributes O protected static methods Oprivate attributes Opublic final methods public abstract methods Por CamScanner 04-26....pdf PDF CamScanner 04-26....pdf ^ CamScanner 04-26....pdf
class IndexItem { public: virtual int count() = 0; virtual void display()= 0; };class Book : public IndexItem { private: string title; string author; public: Book(string title, string author): title(title), author(author){} virtual int count(){ return 1; } virtual void display(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };class Category: public IndexItem { private: /* fill in the private member variables for the Category class below */ ? int count; public: Category(string name, string code): name(name), code(code){} /* Implement the count function below. Consider the use of the function as depicted in main() */ ? /* Implement the add function which fills the category with contents below. Consider the use of the function as depicted in main() */ ? virtualvoiddisplay(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };
Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…