String str = "  2016-09-02";
       

if (str.indexOf("\u00A0") != -1) {
    str= str.replaceAll("\u00A0", "");
}

 System.err.println(str);

/**

     * java去除字符串中的空格、回车、换行符、制表符

     * @param str

     * @return

     */

    public static String replaceBlank(String str) {

        String dest = "";

        if (str!=null) {

            Pattern p = Pattern.compile("\\s*|\t|\r|\n");

            Matcher m = p.matcher(str);

            dest = m.replaceAll("");

        }

        return dest;

    }