// db parameters
String url       = "jdbc:root://localhost:3306?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC";
String user      = "root";
String password  = "";

Connection conn = null;

try(conn = DriverManager.getConnection(url, "root", "")) {
 conn.setCatalog("fel stellenanzeigencatch");

// xd
} catch(SQLException e) {
   System.out.println(e.getMessage());
}