ANSWER MUST BE TYPED WITHIN THE QUESTIONS BELOW

Linked Lists

1. (a) Declare a class named User that contains the following information: (6 pts.)

String name

String username

String password

Include in the class a single constructor that is passed a particular name, username, and
password; setters and getters, and a toString method that returns the information in
a given User object as follows:

"Ashley Smith username: asmith password:aWjPP406!"

(b) Declare a class named UserNode that contains a single User object and a link to another
UserNode. Include an appropriate constructor and an appropriate set of methods for this
class. (4 pts).

2. Create a class named UserAccounts that maintains a list of users (implemented as a linked list
of UserNodes), with an appropriate constructor, and the following methods: (15 pts.)

isEmpty() – returns true if list is empty, and false otherwise

findPassword – returns the password for a given user name

changePassword – updates the password for a given user name and password. If they do
not match, the password is not updated.

addUser – passed a User object to add

deleteUser – deletes a user for a given user name and password. If they do not match,
the user is not deleted.

printUsers – prints a list of all users (including name, username and password)