19.4. Basic Steps in JDBC Programming

Try these first

1. 1.

   What is the JDBC package used for?

   Hint

   Think about what classes are included.

2. 2.

   Why is it important to close the connection?

   Hint

   Consider what happens to resources that are not released.

3. 3.

   Which method is used to establish a connection in JDBC?

   • `getConnection()`
   • `createConnection()`
   • `initConnection()`

   Hint

   Think about what the DriverManager class does.

4. 4.

   True or False: You can skip loading the driver in JDBC after version 4.0.

   • True
   • False

   Hint

   Consider how updates might simplify the process.

5. 5.

   Consider a scenario in which your application needs to connect to multiple databases. How would you manage JDBC connections effectively to avoid resource leaks?

   Hint

   Think about scalability and reusability.

6. 6.

   Create a simple JDBC program that connects to a MySQL database, retrieves all user data, and displays it. Ensure to handle exceptions and close connections properly.

   Hint

   Ensure you utilize both `ResultSet` to collect results and close resources at the end.