Design a simple Java swing application that connects to a database using JDBC$.$ The application should allow users to perform the following tasks:

Connect to the Database: Provide fields for the user to enter the database URL, username, and password.

Insert Data: Include fields to input new user data $($e$.$g$.,$ name, email, id number$)$ and a button to insert this data into the database.

Retrieve Data: After a successful connection, the application should have a button that retrieves and displays data from a specified table in the database $($e$.$g$.,$ a "Users" table$)$ in a Jable.P