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.
Este ejercicio forma parte del curso
Querying a PostgreSQL Database in Java
Instrucciones del ejercicio
- Enclose the connection in a
tryblock. - Create a connection from
DriverManager.
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
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!");
}
}
}