import java.sql.Connection;
import java.sql.DriverManager;

public class ClickHouseConnectionTest {
    public static void main(String[] args) {
        String url = "jdbc:clickhouse://<host>:<port>/<database>";
        String user = "incorrectuser";      // optional
        String password = "incorrectpwd";  // optional

        try (Connection connection = DriverManager.getConnection(url, user, password)) {
            if (connection.isValid(5)) {
                System.out.println("Connection to ClickHouse is valid.");
				
				
            } else {
                System.out.println("Connection established, but not valid.");
            }
        } catch (Exception e) {
            System.err.println("Failed to connect to ClickHouse:");
            e.printStackTrace();
        }
    }
}