Regex in java - catch the dot

Question

How to add the dot to the last of regex and it's is the optional like:

public static final String REGEX_HASHTAGS = "([^|\s|>]*[a-z]{2}[0-9]+(\s|$|<)+)";

i want to catch the string like: cx10 or cx10.

Answer 1

Try this regex:

public static final String REGEX_HASTAGS
    = "\\b[a-z]{2}[0-9]+\\.?\\b";

\b is the word anchor, and looks like what you want given your initial regex.