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5 Questions

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Untitled Quiz

Created by

@BeneficentColumbus

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Questions and Answers

What is the primary purpose of the User class in the given Java application?

To handle database operations

To display the GUI for user interaction

To store and validate user login credentials (correct)

To add new users to the system

What data structure is used to store User objects in the application?

ArrayList (correct)

HashSet

LinkedList

TreeSet

What class is used to display a message for valid or invalid login attempts?

JPanel

JOptionPane (correct)

JDialog

JFrame

What is the optional functionality that can be added to the application?

<p>Adding new users</p> Signup and view all the answers

What is the primary purpose of validating user input in the application?

<p>To prevent unauthorized access</p> Signup and view all the answers

Study Notes

Practicum 5: GUI Application

The task is to create a Java application with a Graphical User Interface (GUI) for user login validation.

Requirements

Define a User class with instance variables for username and password.
Store User objects in an ArrayList for valid username/password pairs.
Implement input validation for user input.
Use JOptionPane to display messages for valid or invalid login attempts.

Optional Feature

Add functionality to allow adding new users.

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