java replaceAll 忽略大小写

    public static void main(String[] args) {
        String temp="   CLASS_path : /aaabb/";

        System.out.println(temp.replaceAll("(?i)\sclass(_?)path\s:",""));
        System.out.println(temp.replaceAll("classpatH",""));
    }

  public static void main(String[] args) {
        String path="           Class__Path :     /aaabb/";
        String patten="\s*class(_?)path\s*:\s*";
        if(Pattern.compile(patten+".*",
                Pattern.CASE_INSENSITIVE).matcher(path).matches()){
            System.out.println(path.replaceAll("(?i)"+patten,""));
        }
    }