CODEWITHSUNDEEP
regexandroid-studio
Mike Dole
Mike Dole

Reputation: 687

Illegal/unsupported escape sequence when using regex in Android Studio

I'm trying to clean up text fetched from Wikipedia via the API. I want to remove the words 'Template:sfn' but I'm having trouble doing that with regular expression:

The text is something like: ...a private boarding school, after his parents discovered that he had made frequent trips into Manhattan without their permission.Template:sfn

With the help of: https://regex101.com I found out that my regexp needs to be something like: \Template:.*\s

If I copy and paste that to Android studio:

plainStr = plainStr.replaceAll("\\Template:.*\\s", "");

It tells me the two backslashes are not correct (illegal/unsupported escape sequence)

How do I rewrite my expression so AS accepts it?

And on top of that I want to remove all words after the colon. Wikipedia sometimes has Template:Nowrap, Template:Main, etc. That's my 'output' if I use the Bliki library (ConvertWikiToHtml) I want to remove all combinations. To make it more complex it could also be more than one word like:Template:dead link or Template:cite press release but I don't think this can be handled with a regex.

Kind regards,

Mike

Upvotes: 0

Views: 815

Answers (2)

ka3ak
ka3ak

Reputation: 3191

In my case it was Android Studio issue. At least I couldn't explain it otherwise because the code below was compiled and ran well in Eclipse:

Pattern p = Pattern.compile(".*\\R|.+\\z");

However after I copied it and pasted in Android Studio \\R was underlined with the error message "illegal/unsupported escape sequence". However the code was compiled and executed without any problems.

Upvotes: 1

ysth
ysth

Reputation: 98398

You are mistaken; a backslash before the T accomplishes nothing.

Just remove it:

plainStr = plainStr.replaceAll("Template:.*\\s", "");

Upvotes: 1

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