Object Concepts. I need help in understanding this code. Explanation that would be easy to digest.
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- public class Person { private String personID; private String firstName; private String lastName; private String birthDate; private String address; public Person(){ personID = ""; firstName = ""; lastName = ""; birthDate = ""; address = ""; } public Person(String id, String first, String last, String birth, String add){ setPerson(id,first,last,birth,add); } public void setPerson(String id, String first, String last, String birth, String add){ personID = id; firstName = first; lastName = last; birthDate = birth; address = add; } public String getFirstName(){ return firstName; } public String getLastName(){ return lastName; } public String getBirthdate(){ return birthDate; } public String getAddress(){ return address; } public void print(){ System.out.print("\nPerson ID = " + personID); System.out.print("\nFirst Name = " +firstName); System.out.print("\nLast Name = " +lastName); System.out.print("\nBirth Date = " +birthDate); System.out.print("\nAddress = " +address); } public String…//PLEASE CORRECT MY MISTAKES, THANK YOUpublic class Person { private String personID; private String firstName; private String lastName; private String birthDate; private String address; public Person(){ personID = ""; firstName = ""; lastName = ""; birthDate = ""; address = ""; } public Person(String id, String first, String last, String birth, String add){ setPerson(id,first,last,birth,add); } public void setPerson(String id, String first, String last, String birth, String add){ personID = id; firstName = first; lastName = last; birthDate = birth; address = add; } public String getFirstName(){ return firstName; } public String getLastName(){ return lastName; } public String getBirthdate(){ return birthDate; } public String getAddress(){ return address; } public void print(){ System.out.print("\nPerson ID = " + personID); System.out.print("\nFirst Name = " +firstName); System.out.print("\nLast Name = " +lastName); System.out.print("\nBirth Date = " +birthDate);…class Course { private String courseNumber; private String courseName; private int creditHrs; public Course (String number, String name, int creditHrs){ this.courseNumber = number; this.courseName = name; this.creditHrs = creditHrs; } public String getNumber() { return courseNumber; } public String getName() { return courseName; } public int getCreditHrs() { return creditHrs; } public void setCourseNumber(String courseNumber) { this.courseNumber = courseNumber; } public void setCourseName(String courseName) { this.courseName = courseName; } public void setCreditHrs(int creditHrs) { this.creditHrs = creditHrs; }}class Student { private String firstName; private String lastName; private String gender; private String phoneNumber; private String email; private String jNumber; protected ArrayList courseList; public String getFullName() {…
- class Player { protected: string name; double weight; double height; public: Player(string n, double w, double h) { name = n; weight = w; height = h; } string getName() const { return name; } virtual void printStats() const = 0; }; class BasketballPlayer : public Player { private: int fieldgoals; int attempts; public: BasketballPlayer(string n, double w, double h, int fg, int a) : Player(n, w, h) { fieldgoals = fg; attempts = a; } void printStats() const { cout << name << endl; cout << "Weight: " << weight; cout << " Height: " << height << endl; cout << "FG: " << fieldgoals; cout << " attempts: " << attempts; cout << " Pct: " << (double) fieldgoals / attempts << endl; } }; a. What does = 0 after function printStats() do? b. Would the following line in main() compile: Player p; -- why or why not? c. Could…class Course { private String courseNumber; private String courseName; private int creditHrs; public Course (String number, String name, int creditHrs){ this.courseNumber = number; this.courseName = name; this.creditHrs = creditHrs; } public String getNumber() { return courseNumber; } public String getName() { return courseName; } public int getCreditHrs() { return creditHrs; } public void setCourseNumber(String courseNumber) { this.courseNumber = courseNumber; } public void setCourseName(String courseName) { this.courseName = courseName; } public void setCreditHrs(int creditHrs) { this.creditHrs = creditHrs; }} class Student { private String firstName; private String lastName; private String gender; private String phoneNumber; private String email; private String jNumber; protected ArrayList<MyCourse> courseList; public String…public class Student { private String name; private String major; privatedoublegpa; privateinthoursCompleted; /**Constructor * @param name * The student's name * @param major * The student's major */ public Student(String name, String major) { this.name = name; this.major = major; this.gpa = 0.0; hoursCompleted = 0; } /**Constructor * @param name * The student's name * @param major * The student's major * @param gpa * The student's cumulative gpa * @param hoursCompleted * Number of credit hours the student has completed */ public Student(String name, String major, doublegpa, inthoursCompleted) { this.name = name; this.major = major; this.gpa = gpa; this.hoursCompleted = hoursCompleted; } /** * @return The student's major. */ public String getMajor() { returnmajor; } /** * @param major The major to set. */ publicvoid setMajor(String major) { this.major = major; } /** * @return The student's name. */ public String getName() { returnname; } /** * @param name The name to set. */…
- 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…class Lease{ private String name; private int aptNumber; private double rent; private int term; private static final int FEE = 10; public Lease(){ name = "XXX"; aptNumber = 0; rent = 1000; term = 12; } public void setName(String tenant) { name = tenant; } public void setAptNumber(int apt){ aptNumber = apt; } public void setRent(double monthRent) { rent = monthRent; } public void setTerm(int t){ term = t; } public String getName(){ return name; } public int getAptNumber(){ return aptNumber; } public double getRent(){ return rent; } public int getTerm(){ return term; } public void addPetFee(){ rent = rent + FEE; } } Create a class named TestLease as instructed below: Instantiate four Lease objects in the main()method. Change the aptNumber value for the first object to 20 Change the rent value…public class Plant { protected String plantName; protected String plantCost; public void setPlantName(String userPlantName) { plantName = userPlantName; } public String getPlantName() { return plantName; } public void setPlantCost(String userPlantCost) { plantCost = userPlantCost; } public String getPlantCost() { return plantCost; } public void printInfo() { System.out.println(" Plant name: " + plantName); System.out.println(" Cost: " + plantCost); }} public class Flower extends Plant { private boolean isAnnual; private String colorOfFlowers; public void setPlantType(boolean userIsAnnual) { isAnnual = userIsAnnual; } public boolean getPlantType(){ return isAnnual; } public void setColorOfFlowers(String userColorOfFlowers) { colorOfFlowers = userColorOfFlowers; } public String getColorOfFlowers(){ return colorOfFlowers; } @Override public void printInfo(){…
- public class Application { public static void main(String[] args) { Employee empl = new Employee(); empl.firstName = "Ali"; empl.lastName = "Omar"; empl.salary = 20000; Employee emp2 = new Employee(); emp2.firstName = "Mohamed"; emp2.lastName = "Nour"; emp2.salary = 30000; System.out.println("- System.out.printin("- empl.employeeSalary(); System.out.println("- empl.checkEmployeeSalary(emp1.salary, emp2.salary); System.out.printin("- System.out.println("- printEmployee(emp2); System.out.printin("- Employee employeeArr[] = new Employee[2]: employeeArr[0] = empl; employeeArr[1] = emp2; Application a = new Åpplication(); a.printArrayofEmployee(employeeArr); Non static (instance) start to call Static function to print ---------"); "); - Non Static function to print - --"); Non static (instance) start to call same class Static function to print --------); -"); Non Static function to print ----); System.out.println("- System.out.printin("- System.out.printin("Salary : " + Employee.salary);…public class Book { protected String title; protected String author; protected String publisher; protected String publicationDate; public void setTitle(String userTitle) { title = userTitle; } public String getTitle() { return title; } public void setAuthor(String userAuthor) { author = userAuthor; } public String getAuthor(){ return author; } public void setPublisher(String userPublisher) { publisher = userPublisher; } public String getPublisher() { return publisher; } public void setPublicationDate(String userPublicationDate) { publicationDate = userPublicationDate; } public String getPublicationDate() { return publicationDate; } public void printInfo() { System.out.println("Book Information: "); System.out.println(" Book Title: " + title); System.out.println(" Author: " + author); System.out.println(" Publisher: " + publisher); System.out.println(" Publication…public class FoodItem { private String name; private double fat; private double carbs; private double protein; // TODO: Define default constructor // TODO: Define second constructor with parameters to initialize private fields (name, fat, carbs, protein) public String getName() { return name; } public double getFat() { return fat; } public double getCarbs() { return carbs; } public double getProtein() { return protein; } public double getCalories(double numServings) { // Calorie formula double calories = ((fat * 9) + (carbs * 4) + (protein * 4)) * numServings; return calories; } public void printInfo() { System.out.println("Nutritional information per serving of " + name + ":"); System.out.printf(" Fat: %.2f g\n", fat); System.out.printf(" Carbohydrates: %.2f g\n", carbs); System.out.printf(" Protein: %.2f g\n", protein); }} import java.util.Scanner; public class NutritionalInfo {…