关于Java 去除空格，换行的代码

public static String replaceBlank(String str) {
    String dest = "";
    if (str != null) {
        //Pattern p = Pattern.compile("\\s*|\t|\r|\n|\\x20");
        Pattern p = Pattern.compile("\\s*|\t|\r|\n");
        Matcher m = p.matcher(str);
        dest = m.replaceAll("");
    }
    return dest;
}