PersonTester.java public class PersonTester { public static void main(String[] args) { Person individual = new Person(Frodo); individual.befriend(new

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Question:

PersonTester.java

public class PersonTester {

public static void main(String[] args) {

Person individual = new Person("Frodo");

individual.befriend(new Person("Samwise"));
individual.befriend(new Person("Aragorn"));
individual.befriend(new Person("Boromir"));

System.out.println("Friend List: " + individual.getFriendNames());
System.out.println("Expected: Samwise Aragorn Boromir ");
System.out.println("Friend Count: " + individual.getFriendCount());
System.out.println("Expected: 3");

individual.unfriend(new Person("Boromir"));

System.out.println("Friend List: " + individual.getFriendNames());
System.out.println("Expected: Samwise Aragorn ");
System.out.println("Friend Count: " + individual.getFriendCount());
System.out.println("Expected: 2");

individual.befriend(new Person("Gandalf"));

System.out.println("Friend List: " + individual.getFriendNames());
System.out.println("Expected: Samwise Aragorn Gandalf ");
System.out.println("Friend Count: " + individual.getFriendCount());
System.out.println("Expected: 3");

individual.unfriend(new Person("Samwise"));

System.out.println("Friend List: " + individual.getFriendNames());
System.out.println("Expected: Aragorn Gandalf ");
System.out.println("Friend Count: " + individual.getFriendCount());
System.out.println("Expected: 2");
}
}

Person.java (has to do)
/** Represents a person and their list of friends
*/
public class Person
{
private String firstName;
private String friendList;
private int friendCount;

/** Creates a person with a given name and no friends in their list.
* @param name the first name of the person of interest
*/
public Person(String name)
{
//-----------Start below here. To do: approximate lines of code = 3
// initialize instance variable firstName to name, initialize friendList to "" and friendCount to 0

//-----------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
}

/** Retrieves the names of all of a person's friends.
* @return a string containing all of the names of a person's friends
*/
public String getFriendNames()
{
return friendList;
}

/** Adds a person to the list of friends of this person.
* @param p the person whose name is to be added to the friend list
*/
public void befriend(Person p)
{
//-----------Start below here. To do: approximate lines of code = 2
// add (concatenate) the first name of Person p to the String friendList followed by a space " "
// increment friendCount

//-----------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
}

/** Removes a person from the list of friends of this person.
* @param p the person whose name is to be removed from the friend list
*/
public void unfriend(Person p)
{
//-----------Start below here. To do: approximate lines of code = 2
// removes the first name of Person p from the friendList string. Decrement friendCount
// Hint: use the replace method of class String. Don't forget to remove the space following the first name (see befriend above)
// e.g. if first name is "xxx" then remove "xxx "

//-----------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
}

/** Returns the number of friends a person currently has.
* @return a count of the number of friends the person has
*/
public int getFriendCount()
{
return friendCount;
}

}