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 exercício faz parte do curso
Querying a PostgreSQL Database in Java
Instruções do exercício
- Enclose the connection in a
tryblock. - Create a connection from
DriverManager.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
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!");
}
}
}