Regular Expression To Find a Substring from a text with a particular matches, the sequence may come multiple times in the text

Question

I've a variable of type String.

String a = "<html><head><title></title></head><body>&nbsp;${member.activation_date}&nbsp;&nbsp;${member.activationdate}&nbsp;</body></html>";

Now I want to fetch all the words starting with the $ and ending with a, I have a regular expression which works like a charm (\$\{\w+\.\w+\}) but is there any other better way to do so which can save me the second \w to make it efficient.

Not much, I've been using split to break it in small junks and fetch the words... But it takes time and code is kind of lengthy. I am totally naive to regex... — Majid Ali Khan, Mar 08 '18 at 18:52
Possible duplicate of [Regular expression - starting and ending with a character string](https://stackoverflow.com/questions/18024298/regular-expression-starting-and-ending-with-a-character-string) — Boaz, Mar 08 '18 at 18:53
No, not a duplicate. That Q asks about matching an entire string against a pattern, OP clearly asking for just a substring. None of the answers there apply. — markspace, Mar 08 '18 at 18:54
It really hurts when someone down votes a question... Is this the way u encourage newbies... — Majid Ali Khan, Mar 08 '18 at 18:55
This is the way we encourage newbies to ask proper questions. You really should put more effort into this, there's tons of regex tutorials on the web. (And no, I did not down-vote.) — markspace, Mar 08 '18 at 18:56
Try it like this [`\${[^}]+}`](https://regex101.com/r/Q6JDMw/1) — The fourth bird, Mar 08 '18 at 18:57
@Thefourthbird `{` is also special character which requires escaping (at least in regex flavor used in Java). — Pshemo, Mar 08 '18 at 18:58
Very gud. It really helps. Maybe you are repaying the way u were treated. No worries... Please downvote it 100 more times, if it makes u feel good :) — Majid Ali Khan, Mar 08 '18 at 18:59
@Thefourthbird majid is probably trying to create something similar to EL expressions and that regexp matches other characters than words, for eg it also matches white space characters. — Aniket Sahrawat, Mar 08 '18 at 18:59
@AniketSahrawat You are right, it also matches whitespaces. Your regex would be a better solution. — The fourth bird, Mar 08 '18 at 19:10
I've come with a regex and it works great. Thank you for helping me out. (\$\{\w+\.\w+\}) — Majid Ali Khan, Mar 08 '18 at 20:17

Majid Ali Khan · Accepted Answer · 2018-08-07T13:57:10.727

1

Since I didn't get my desired answer rather got multiple downvotes, I am accepting this one... (\$\{\w+\.\w+\})
Thank you all for your answers.

edited Aug 07 '18 at 13:57

answered Mar 08 '18 at 20:18

Majid Ali Khan

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Regular Expression To Find a Substring from a text with a particular matches, the sequence may come multiple times in the text

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