public class Conexión {

    public Connection oracle(){
        try{
            String url = "jdbc:oracle:thin:@localhost:1521:XE";
            String usuario = "system";
            String password = "holajolarola6";
            Class.forName("oracle.jdbc.driver.OracleDriver");
            return DriverManager.getConnection(url, usuario, password);
        }
        catch(Exception e){
            //return null;
        }
    }
}