Java regular expression word match

Question

I have 3 values IU, PRI and RET. if my input string contains any one or more value(s),
the Java regular expression should return true.

Answer 1

You need word boundaries for that:

boolean foundMatch = false;
Pattern regex = Pattern.compile("\\b(?:UI|PRI|RET)\\b");
Matcher regexMatcher = regex.matcher(subjectString);
foundMatch = regexMatcher.find();