Method resolve

vm/JavaAPI/src/java/net/URI.java:820–856

Resolve a relative URI by merging it with this URI. @param uri a URI to resolve against this URI. @return a new URI created by merging given URI with this URI. @see http://docs.oracle.com/javase/6/docs/ap

(URI uri)

     * @see <a href="http://docs.oracle.com/javase/6/docs/api/java/net/URI.html#resolve%28java.net.URI%29">http://docs.oracle.com/javase/6/docs/api/java/net/URI.html#resolve%28java.net.URI%29</a>
     */
    public URI resolve(URI uri) {
        if (isOpaque() || uri.isAbsolute()) {
            return uri;
        }
        String thatPath = uri.getPath();
        String thatQuery = uri.getQuery();
        String thatAuthority = uri.getAuthority();
        String thatFragment = uri.getFragment();
        try {
            // if standalone fragment was passed.
            if (thatFragment != null
                    && (uri.getScheme() == null && thatPath == null && thatQuery == null && thatAuthority == null)) {
                return new URI(getScheme(), getAuthority(), getPath(), getQuery(), thatFragment);
            }
            if (thatAuthority != null) {
                return new URI(getScheme(), thatAuthority, thatPath, thatQuery, thatFragment);
            }
            // an absolute path was passed
            if (thatPath != null && thatPath.charAt(0) == PATH_SEPARATOR) {
                return new URI(getScheme(), getAuthority(), thatPath, thatQuery, thatFragment);
            }
            // a relative path was passed
            String thisPath = getPath();
            if (thisPath != null) {
                int index = thisPath.lastIndexOf(PATH_SEPARATOR);
                if (index != -1) {
                    thisPath = thisPath.substring(index);
                }
            }
            thisPath += PATH_SEPARATOR + thatPath;
            return new URI(getScheme(), getAuthority(), thisPath, thatQuery, thatFragment).normalize();
        } catch (URISyntaxException use) {
            // since both uri's are already validated, should never get here
            throw new IllegalArgumentException(use.getMessage());
        }

    }

    /**
     * Normalize a URI by removing any "./" segments, and "path/../" segments.