Conversion of C#.Net Regex to Java Regex Pattern

Question

I'm not a pro in Regex, therefore I'm having a difficulty translating this regex pattern to Java.

I believe it would be an easy task to a guy which is familiar enough with Regex. I have seen similar topics, however - each topic is relevant for a specific regex pattern...

The Pattern is:

@"\<meta name=""title"" content=""(?<title>.*)""\>"

Thanks in advance!

The only thing interesting I see in there is the double-quotes. Remove the @ at the front, un-double the quotes and escape them instead (with a backslash). — mpen
– mpen, Commented Mar 25, 2012 at 17:57
I did so. I didn't just copy-paste it to Java... I removed the '@' and changed the special characters to * (e.g. \" instead of "" and \\ instead of ), and yet I got an exception that this is not a valid Regex Pattern — Nati Cohen
– Nati Cohen, Commented Mar 25, 2012 at 18:00
It's probably the named capture. I cant find any straight answer on if Java supports them. Try taking it out. Replace (?<title>.*) with just (.*) (Edit: Actually, apparently Java7 does but not prior stackoverflow.com/a/415635/65387) — mpen
– mpen, Commented Mar 25, 2012 at 18:06

mpen · Accepted Answer · 2012-03-25 18:07:47Z

1

If you want slashes in front of the openning and closing angle-brackets, use this (escaped for Java):

"\\\\<meta name=\"title\" content=\"(.*)\"\\\\>"

Without them, use this:

"<meta name=\"title\" content=\"(.*)\">"

Tested here using the unescaped version:

<meta name="title" content="(.*)">

edited Mar 25, 2012 at 18:07

answered Mar 25, 2012 at 17:59

mpen

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1 Comment

Nati Cohen Over a year ago

I have tried it, and got an exception. just to be sure, I have tested it on regex.powertoy.org as-well, and got a negative result.

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