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Groups > comp.lang.java.programmer > #34709

Re: String replaceAll escaping sequence

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On 6/24/16 12:31 AM, Philipp Kraus wrote:
> Hello,
>
> I try to add an escape sequence to a String. I have got String with #, _ & (symbols which must be escaped on LaTeX) and try to put a backslash in front of the symbol, so:
>
> # -> \#
> $ -> \$
>
> I try to do this with:
>
> mystring.replaceAll( "([\\$\\#&%_])", "\\\\$1" )
>
> but in this case i get a double backslash \\$ for example, on
>
> mystring.replaceAll( "([\\$\\#&%_])", "\\$1" )
>
> I don't get any backslash at the output.
>
> How can I create the correct regex to put one backslash in front of the symbol?
>
> Thanks
>
> Phil
>

This one worked for me:

code:
         final String string = "Test # and $ and _ and \\";
         System.out.println("Original string: " + string);
         System.out.println("Replaced string: " + 
string.replaceAll("[#$_\\\\]", "\\\\$0"));

output:

Original string: Test # and $ and _ and \
Replaced string: Test \# and \$ and \_ and \\

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Thread

String replaceAll escaping sequence Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2016-06-24 00:31 -0700
  Re: String replaceAll escaping sequence Arne Vajhøj <arne@vajhoej.dk> - 2016-06-24 19:49 -0400
  Re: String replaceAll escaping sequence Lew <lewbloch@gmail.com> - 2016-06-25 17:57 -0700
    Re: String replaceAll escaping sequence Arne Vajhøj <arne@vajhoej.dk> - 2016-06-25 22:14 -0400
  Re: String replaceAll escaping sequence Daniel Pitts <usenet@coloraura.com> - 2016-06-27 13:52 -0700

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