Get database user name in Java

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
// ww w .  ja v a  2 s  .com
public class Main {
  public static void main(String[] args) throws Exception {
    Connection conn = getConnection();

    DatabaseMetaData mtdt = conn.getMetaData();
    System.out.println("User name: " + mtdt.getUserName());

    conn.close();
  }

  private static Connection getConnection() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    String url = "jdbc:hsqldb:mem:data/tutorial";

    return DriverManager.getConnection(url, "sa", "");
  }
}