Homework Answers
a) private
Explanation:
The member field name has the access specifier is private
b) public
Explanation:
The member method AddCourse() has the access specifier is public
c) Person is the immediate base class of Student
Explanation: Student (derived / child class) extends Person (Base / Parent class)
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10. Observe the following simple program: public class Student : Person { private string name; private...
public class Scheduler { private List<Course> classes; private List<Student> students; public Scheduler() {...
public class Scheduler { private List<Course> classes; private List<Student> students; public Scheduler() { classes = new ArrayList<Course>(); students = new ArrayList<Student>(); } public void addCourse(Course course) { this.classes.add(course); } public List<Course> getCourses() { List<Course> newCList=new ArrayList<>(); for(int i=0;i<classes.size();i++){ newCList.add(classes.get(i)); } return newCList; } public void addStudent(Student student) { this.students.add(student); } ...
Step 1 Develop the following class: Class Name: CollegeDegree Access Modifier: public Instance variables Name: major...
Step 1 Develop the following class: Class Name: CollegeDegree Access Modifier: public Instance variables Name: major Access modifier: private Data type: String Name: numberOfCourses Access modifier: private Data type: int Name: courseNameArray Access modifier: private Data type: String [ ] Name: courseCreditArray Access modifier: private Data type: int [ ] Static variables Name: maximumNumberOfCourses Access modifier: private Data type: int Initial Value: 40 Constructor Name: CollegeDegree Access modifier: public Parameters: none (default constructor) Task: sets major to the empty string...
What is the final value of the count field? public class Person { private String name;...
What is the final value of the count field? public class Person { private String name; private int age; private static int count=0; public Person(String name, int age) { this.name = name; this.age age; count++; } public static void main(String[] args) { Person a - new Person("John Doe". 35): Person b new Person("Jane Doe", 38): for(int i=0;i<5;i++) Person tempa
public class Person{ private Disease currentDisease; private String name; private Point position; private List<Susceptible> othersInfected; public...
public class Person{
private Disease currentDisease;
private String name;
private Point position;
private List<Susceptible> othersInfected;
public Person(Point position,String name){
this.position =position;
this.name = name;
List<Susceptible> othersInfected = new
ArrayList<>();
}
public void addToTracing(Susceptible person){
othersInfected.add(person);
}
public List<Susceptible> getOthersInfected(){
return this.othersInfected;
}
}
I got nullpointerException error when using addToTracing method,
how do I fix it
9 List<Susceptible> folks = new ArrayList<>(); 10 11 folks.add(new Person (new Point(0,0), "Ann")); 12 folks.add(new Person (new Point(4,23), "Mike")); 13 folks.add(new Person (new Point(0,43),...
Public class Person t publie alass EmployeeRecord ( private String firstName private String last ...
public class Person t publie alass EmployeeRecord ( private String firstName private String last Nanei private Person employee private int employeeID publie EnmployeeRecord (Person e, int ID) publie Person (String EName, String 1Name) thia.employee e employeeID ID setName (EName, 1Name) : publie void setName (String Name, String 1Name) publie void setInfo (Person e, int ID) this.firstName- fName this.lastName 1Name this.employee e employeeID ID: publio String getFiritName) return firstName public Person getEmployee) t return employeei public String getLastName public int getIDO...
public class Animal { private String name; //line 1 private int weight; //line 2...
public class Animal { private String name; //line 1 private int weight; //line 2 private String getName(){ return name; } //line 3 public int fetchWeight(){ return weight; } //line 4 } public class Dog extends Animal { private String food; //line 5 public void mystery(){ //System.out.println("Name = " + name); //line 6 System.out.println("Food = " + food); //line 7 } } I want to know the super...
Step 1 Develop the following class: Class Name: Bag Access Modifier: public Instance variables Name: name...
Step 1 Develop the following class: Class Name: Bag Access Modifier: public Instance variables Name: name Access modifier: private Data Type: String Name: currentWeight Access modifier: private Data Type: double Name: maximumWeight Access modifier: private Data Type: double Constructors Name: Bag Access modifier: public Parameters: none (default constructor) Task: sets the value of the instance variable name to the empty string sets the value of the instance variable currentWeight to 0.0 sets the value of the instance variable maximumWeight to...
4. Command pattern //class Stock public class Stock { private String name; private double price; public...
4. Command pattern //class Stock public class Stock { private String name; private double price; public Product(String name, double price) { this.name = name; this.price = price; } public void buy(int quantity){ System.out.println(“BOUGHT: “ + quantity + “x “ + this); } public void sell(int quantity){ System.out.println(“SOLD: “ + quantity + “x “ + this); } public String toString() { return “Product [name=” + name + “, price=” + price + “]”; } } a. Create two command classes that...
Question 19 Given the following class: public class Swapper ( private int x; private String y...
Question 19 Given the following class: public class Swapper ( private int x; private String y public int z; public Swapper( int a, String b, int c) ( x-a; y b; zC; public String swap() ( int temp -x; x-z z temp; return y: public String tostring() ( if (x<z) return y: else return" +x+z What would the following code output? Swapper r new Suapper( 5, "no", 10); System.out.printin( r. swap ) ): no no510 510 e 15 Question 20...
Given a class called Student and a class called Course that contains an ArrayList of Student....
Given a class called Student and a class called Course that
contains an ArrayList of Student. Write a method called
getDeansList() as described below. Refer to Student.java below to
learn what methods are available.
I will paste both of the simple .JAVA codes below
COURSE.JAVA
import java.util.*;
import java.io.*;
/******************************************************
* A list of students in a course
*****************************************************/
public class Course{
/** collection of Students */
private ArrayList<Student> roster;
/*****************************************************
Constructor for objects of class Course
*****************************************************/...
What is the final value of the count field? public class Person { private String name; private int age; private static int count=0; public Person(String name, int age) { this.name = name; this.age age; count++; } public static void main(String[] args) { Person a - new Person("John Doe". 35): Person b new Person("Jane Doe", 38): for(int i=0;i<5;i++) Person tempa
public class Person{
private Disease currentDisease;
private String name;
private Point position;
private List<Susceptible> othersInfected;
public Person(Point position,String name){
this.position =position;
this.name = name;
List<Susceptible> othersInfected = new
ArrayList<>();
}
public void addToTracing(Susceptible person){
othersInfected.add(person);
}
public List<Susceptible> getOthersInfected(){
return this.othersInfected;
}
}
I got nullpointerException error when using addToTracing method,
how do I fix it
9 List<Susceptible> folks = new ArrayList<>(); 10 11 folks.add(new Person (new Point(0,0), "Ann")); 12 folks.add(new Person (new Point(4,23), "Mike")); 13 folks.add(new Person (new Point(0,43),...
public class Person t publie alass EmployeeRecord ( private String firstName private String last Nanei private Person employee private int employeeID publie EnmployeeRecord (Person e, int ID) publie Person (String EName, String 1Name) thia.employee e employeeID ID setName (EName, 1Name) : publie void setName (String Name, String 1Name) publie void setInfo (Person e, int ID) this.firstName- fName this.lastName 1Name this.employee e employeeID ID: publio String getFiritName) return firstName public Person getEmployee) t return employeei public String getLastName public int getIDO...
Question 19 Given the following class: public class Swapper ( private int x; private String y public int z; public Swapper( int a, String b, int c) ( x-a; y b; zC; public String swap() ( int temp -x; x-z z temp; return y: public String tostring() ( if (x<z) return y: else return" +x+z What would the following code output? Swapper r new Suapper( 5, "no", 10); System.out.printin( r. swap ) ): no no510 510 e 15 Question 20...
Given a class called Student and a class called Course that
contains an ArrayList of Student. Write a method called
getDeansList() as described below. Refer to Student.java below to
learn what methods are available.
I will paste both of the simple .JAVA codes below
COURSE.JAVA
import java.util.*;
import java.io.*;
/******************************************************
* A list of students in a course
*****************************************************/
public class Course{
/** collection of Students */
private ArrayList<Student> roster;
/*****************************************************
Constructor for objects of class Course
*****************************************************/...
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