java打开windows系统的浏览器

    public static void main(String[] args) throws IOException {
        //url链接地址
        String localpath = "http://www.baidu.com/s?tn=ichuner&lm=-1&word=" +
                URLEncoder.encode("江苏省会", "gb2312") + "&rn=1";
        URL url = new URL(localpath);
        //根据url直接获得返回的数据
        BufferedReader breaded = new BufferedReader(new InputStreamReader(url.openStream(),"UTF-8"));
        while ( breaded.readLine() != null) {    //打印这些数据
            System.out.println(breaded.readLine());
        }

        //获得系统类型
        String osName = System.getProperty("os.name", "");
        System.out.println(osName);
        if (osName.startsWith("Windows")) {    //如果是windows系统
            Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + localpath);    //打开浏览器
        }
    }