Setting up the connection
CityBook Libraries needs your application to establish a live connection to their PostgreSQL database. You'll use JDBC's DriverManager.getConnection() method to open the connection, passing in the URL, username, and password.
To ensure proper resource management, you'll wrap the connection in a try-with-resources block so it closes automatically. The Credentials class with URL, USER, and PASSWORD fields is already available, along with the necessary imports: Connection, DriverManager, and SQLException.
This exercise is part of the course
Querying a PostgreSQL Database in Java
Exercise instructions
- Enclose the connection in a
tryblock. - Create a connection from
DriverManager.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
public class Main {
public static void main(String[] args) throws SQLException {
// Open a connection using try-with-resources
____ (Connection conn = ____.____(Credentials.URL, Credentials.USER, Credentials.PASSWORD)) {
System.out.println("Connected to the database!");
}
}
}