Test String
Highlighted Matches 0 matches
| . | Any character | \\d \\w \\s | Digit, word, space |
| ^ $ | Start / end | [abc] | Character class |
| * + ? | 0+, 1+, 0-1 | {n,m} | n to m times |
| (group) | Capture group | (?:non) | Non-capturing |
| \\b | Word boundary | a|b | Alternation |
| (?=x) | Lookahead | (?<=x) | Lookbehind |