using given code to finish

In the previous lab you created a Person class. Now, in this activity change the design of the Person class, in which the list of friends of a person will be stored in an ArrayList, instead of a String. Then, provide getter and setter methods to get the name of a friend using a given position or set the name of an existing friend, respectively. In your tester class, test your class and also printout the list of all friends of a given person object.

package javalab4;

public class Person { private String name; private String friendList;

// Construcor to create object of Person with the given name and // initialize friendlist with empty string public Person(String name) { this.name = name; friendList = new String(""); }

// Add person to the friend list public void befriend( Person p ) { // Concatenate the name of person to the list followed by space this.friendList = this.friendList + p.getName() + " "; }

// Function to unfriend a Person from the list of friends public void unfriend ( Person p ) { // Create a regular expression for the given name of the person String rgx = "\\s*\\b" + p.getName() + "\\b\\s*"; // Replace all the occurences of that name with space friendList = friendList.replaceAll(rgx, " "); }

// Return the name of the Person public String getName( ) { return this.name; }

// Returns list of friends of the Person public String getFriendNames( ) { return friendList; }

public static void main(String[] args) { // Create objects with different names Person pr = new Person("Akos"); Person pr1 = new Person("Tim"); Person pr2 = new Person("Sam"); Person pr3 = new Person("Leo");

pr.befriend(pr1); pr.befriend(pr3); pr.befriend(pr2);

System.out.println("Friend list of " + pr.getName() + ": " + pr.getFriendNames()); pr.unfriend(pr3); System.out.println("Friend list of " + pr.getName() + " after unfriending Leo: " + pr.getFriendNames()); } }