Path: csiph.com!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups: comp.lang.java.help
Subject: Re: Regx problem
Date: Sun, 27 Aug 2017 15:17:01 -0400
Organization: A noiseless patient Spider
Lines: 37
Message-ID: <onv5ja$iab$1@dont-email.me>
References: <hhr5qcpbuc0fcajj5hnvuegtgv50ou5vpq@4ax.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sun, 27 Aug 2017 19:12:42 -0000 (UTC)
Injection-Info: mx02.eternal-september.org; posting-host="8905edd062631d1c496ff8ada72ada4b"; logging-data="18763"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX190Feqz7G6VyYJKbzlkh6Cs"
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0
In-Reply-To: <hhr5qcpbuc0fcajj5hnvuegtgv50ou5vpq@4ax.com>
Content-Language: en-US
Cancel-Lock: sha1:yLS7BjJowVvQ5tiE883PQ43OKTA=
Xref: csiph.com comp.lang.java.help:4204

On 8/27/2017 12:17 PM, IchBin wrote:
> I have always had a hard time with regx. Even the simple things like
> this one. All I want to do is replace a string with another string. In
> this case a ' replaced with ''.

     The problem you describe can be solved without using regular
expressions at all:

	String original = ...;
	String replaced = original.replace("'", "''");

> I am trying:
>   rsNname = rsNname.replaceAll("\\d \\D \\W \\w \\S \\s", "''");
>   rsNname = rsNname.replaceAll("[+.-^]", "''");
>   rsNname = rsNname.replaceAll("[$&+,:;=?@#|'<>.^*()%!-]", "''");
> rsNname = rsNname.replaceAll("['++]", "\\''");
> 
> Nomatter what I do I get a compli error "Derefferencing pointer
> error". Any one have any suggestions.

     No, not without (1) the code you are trying to compile and
(2) the *exact* error message or messages the compiler emits.

> I could write code to do the same but seems better to do in one
> commane.

     It's not clear to me what "do the same" means.  The replaceAll()
calls you show seem to have nothing to do with the problem you say
you are trying to solve -- in fact, some of them are nonsensical to
the point that I think they would throw exceptions at run-time (not
compile-time).  If the replace() call above doesn't meet your needs,
please show your actual code and your actual error messages, and
give a fuller description of what you're trying to do.

-- 
esosman@comcast-dot-net.invalid
Twelve hundred forty-two days to go.