need help explaining each and every line of the code functionality ========================================================== import InfiniteScroll from "react-infinite-scroll-component"; import FeedCard from "../../components/FeedCard";   getOthersFeeds(pageNumber)}           hasMore={hasMore}           endMessage={                           Yay! You have seen it all.                       }           refreshFunction={() => getOthersFeeds(0)}           pullDownToRefresh           pullDownToRefreshThreshold={50}           pullDownToRefreshContent={             ↓ Pull down to refresh           }           releaseToRefreshContent={             ↑ Release to refresh           }         >                       {feedsData.map(               ({ feedId, picture, content, createdOn, feedMetaData, user }) => (                               )             )}                               )

Write out the header of a for-each loop to process an ArrayList called tracks. Don’t worry about the loop’s body.

Use the Eclipse IDE to write java code for Functionality for the “Doctor” interface: The system should allow a doctor to assign a new doctor to a patient using the list of all doctors. The system should then send confirmation messages to the patient and both doctors The appearance of the interface is not important as long as the required functionality is provided. That is, you are not expected to implement a fancy looking interface. just ensure it has a home button and a log out button

Help, I am making a elevator simulation using polymorphism. I am not sure to do now. Any help would be appreciated. My code is at the bottom, that's all I could think off. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. public abstract class Passenger {     public static int passangerCounter = 0;     private String passengerID;     protected…

What happens if the programmer removes the member function getBalance (), and instead substitutes it with sac. getBalance() in conjunction with sac.balance inside the displayBalance instruction? Why? You will need to make the appropriate adjustments to the application so that it can continue to run once these changes have been made.

Each object that is created from its "template" is called a(n) ?

You have to use comment function to describe what each line does    import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.List;   public class PreferenceData {   private final List<Student> students; private final List<Project> projects; private int[][] preferences;   private static enum ReadState { STUDENT_MODE, PROJECT_MODE, PREFERENCE_MODE, UNKNOWN; };   public PreferenceData() { super(); this.students = new ArrayList<Student>(); this.projects = new ArrayList<Project>(); }   public void addStudent(Student s) { this.students.add(s); }   public void addStudent(String s) { this.addStudent(Student.createStudent(s)); }   public void addProject(Project p) { this.projects.add(p); }   public void addProject(String p) { this.addProject(Project.createProject(p)); }   public void createPreferenceMatrix() { this.preferences = new…

Build two classes (Fraction and FractionCounter) and a Driver for use in counting the number of unique fractions read from a text file.   We’ll also reuse the ObjectList class we built in lab to store our list of unique FractionCounters, instead of directly using arrays or the ArrayList. Remember NO DECIMALS! Handle input of any length Introduction Your project is to read in a series of fractions from a text file, which will have each line formatted as follows:   “A/B”.  A sample text file is listed below, and the purpose of your program is to read in one line at a time and build a Fraction object from A and B.  For each unique Fraction seen, your program will create a FractionCounter object used to track the number of occurrences of that specific fraction.  When all the input is consumed, your program will print out its ObjectList of unique FractionCounters, which should report the fraction and its count – see output below. You can assume no blank lines or misleading characters; see…

For the final exercise, we are going to create a 2D Array tester. We want our tester to be versatile, so the class has been designed to take any 2D Object. Polymorphism will allow us to pass any Object type in and do a comparision using that object’s .equal method. This can get a little tricky, so you are given a bit of the structure to help make this happen. You are also given a complete tester code that will compare 4 different arrays for you. The first two should be the same and return true, the second two are different and should return false. Your task is to complete the equals method. Two arrays are equal if all the elements are the same. As you develop your logic, be sure to consider the case when two arrays may be different sizes.   public class TwoDTester { public static void main(String[] args) { Integer[][] firstArray = {{2,3}, {3,4}, {4,5}};Integer[][] secondArray = {{2,3}, {3,4}, {4,5}};TwoDArray first = new…

Why must you implement all interface methods?