preparing for db connection

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.cal.app/src/main/java/de/srsoftware/cal/app/Application.java

@@ -3,6 +3,9 @@ package de.srsoftware.cal.app;
 
 import de.srsoftware.cal.importer.jena.Kassablanca;
 import java.security.NoSuchAlgorithmException;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
 
 /**
  * Test application
@@ -16,8 +19,20 @@ public class Application {
 	 * @param args default
 	 */
 	public static void main(String[] args) throws NoSuchAlgorithmException {
-		var importer	 = new Kassablanca();
-		var appointments = importer.fetch();
-		appointments.forEach(System.out::println);
+
+		String host = null;
+		String database = null;
+		String user = null;
+		String pass = null;
+		int port = 3306;
+
+		// TODO: we need configuration here!
+
+		try (Connection con = DriverManager
+				.getConnection("jdbc:mysql://%s:%s/%s".formatted(host,port,database), user, pass)) {
+			// use con here
+		} catch (SQLException e) {
+			throw new RuntimeException(e);
+		}
 	}
 }