Regex code in java code

Question

I have the following Regex: [<>\\]|\p{C}

How can I create as String with that in Java, the problem is in the Regex are two backslashes:

String reg="[<>\\]|\p{C}";   // this gets error  

Pattern p = Pattern.compile(reg);

What are your imput strings and what would you like the result to be? When asking regex questions - give a few examples on input and output — Nefariis
– Nefariis, Commented Nov 9, 2015 at 19:30

aleroot · Accepted Answer · 2015-11-09 20:46:07Z

4

Just escape the backslash, with a backslash :

String reg="[<>\\\\]|\\p{C}";

edited Nov 9, 2015 at 20:46

answered Nov 9, 2015 at 19:32

aleroot

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2 Comments

Alan Moore Over a year ago

Your first regex was correct. When you write regexes in the form of Java string literals, you always have to use four backslashes to match one. Metacharacters like * lose their special meanings inside character classes, but escape sequences like \s don't, so the backslash is always special.

nhahtdh Over a year ago

Btw, you can just include the Unicode property in the character class "[\\p{C}<>\\\\]"

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