Proposal for getBasePath() on java.net.URL

gistfile1.java

    public static URL getBasePath(URL url) throws MalformedURLException {
        int lastSlash = url.getFile().lastIndexOf('/');
 
        if (lastSlash == -1) {
            return url;
        }
 
        String path = url.getFile().substring(0, lastSlash);
        URL basePath = new URL(url.getProtocol(), url.getHost(), url.getPort(), path);
        return basePath;
    }