File dir = SVNFileUtil.createUniqueFile(new File("."), ".diff", ".tmp");
File userDir = new File(System.getProperty("user.dir")); File dir = SVNFileUtil.createUniqueFile(userDir, ".diff", ".tmp");
    public File createTempDirectory() throws SVNException {        File dir = SVNFileUtil.createUniqueFile(new File("."), ".diff", ".tmp");        boolean created = dir.mkdirs();        if (!created) {            SVNErrorManager.error("svn: cannot create temporary directory '"                    + dir.getAbsolutePath() + "'");        }        return dir;    }