Java Database Connectivity (JDBC)

I have rattled my brain on this now for a few days. i have searched hi and low, and cant find an example on creating a server for the Data base HSQLdb,

there is the code that i am using, the problem is it always returns as the discriptor "shutdown" and i dont know what i am doing wrong,

thus NO client can connect to it,

  public void setUp ()
    {
         try
        {
            Class.forName ("org.hsqldb.jdbcDriver");
           // Connection c = DriverManager.getConnection (urlr, user, password);
        }
        catch (Exception e)
        {
            e.printStackTrace ();
        }
        String db_name = "mydb";
        String serverProps;
        String url = "jdbc:hsqldb:file:mydb";
        String user     = "sa";
        String password = "";
        
        System.out.println ("network mode");
        
        server = new Server ();
       
        server.setRestartOnShutdown (true);
        server.setDatabaseName (0, db_name);
        server.setDatabasePath (0, url);
        server.setLogWriter (null);
        server.setErrWriter (null);
         server.start ();
        //server.setPort (5000);
        //server.start();
          System.out.println (server.getStateDescriptor ());
         System.out.println (server.getAddress ());
        String urlr = "jdbc:hsqldb:hsql://localhost:mydb";
        
        try
        {
            Class.forName ("org.hsqldb.jdbcDriver");
            Connection c = DriverManager.getConnection (urlr, user, password);
        }
        catch (Exception e)
        {
            e.printStackTrace ();
        }
    }

can any one please help me out?? with a link to a code on setting up a server? or any thing, i just find lots of code to make the clients (that i can do) but his server thing is just not working.

Thanks

David