public static void main(String[] args) throws MalformedURLException {
        URL url=null;
        URLConnection conn=null;
        
        try {
            url = new URL("http://www.163.com");
            conn = url.openConnection(); 
            System.out.println("Open "+ conn.getURL()+ " is OKey!");
        } catch (Exception e) {
         
            e.printStackTrace();
        }

        try {
        Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler "+"http://www.hao123.com" );
        } catch (IOException e) {
        e.printStackTrace();
        }
        
    }