e134. parsing a url.txt

这里面包含了一百多个JAVA源文件

try {
        URL url = new URL("http://hostname:80/index.html#_top_");
    
        String protocol = url.getProtocol();    // http
        String host = url.getHost();            // hostname
        int port = url.getPort();               // 80
        String file = url.getFile();            // index.html
        String ref = url.getRef();              // _top_
    } catch (MalformedURLException e) {
    }