! Exclamation, do not matches the next character or regular expression. For example, the below regular expression matches col,cool,…,cooooooooooool,… + Plus, matches 1 or more characters in fron of the plus. For example, the below regular expression matches cl,col,cool,cool,…,coooooooooool,… * Asterisk, matches 0 or more characters in front of the asterisk. For example, the below regular expression matches apple and apples. ? Question mark, matches 1 or 0 character in front of the question mark. For example, the below regex matches, , and. ( ) Parentheses, groups one or more regular expressions. For example, the below regex matches kam, kbm, kcm, k2m, k3m, k4m and k5m. – Hyphen, used for representing a range of letters or numbers,often used inside a square bracket. For example, the below regex matches bad, bed, bcd, brd, and bod. Square brackets, matches any single character from within the bracketed list. For example, the below regex matches a paragraph or a line ends with bye. $ Dollar sign, matches a term if the term appears at the end of a paragraph or a line. ^ Carat inside a bracket, for example, the below regex matches any characters but a, b, c, d, e.
For example, the below regex matches a paragraph or a line starts with Apple.
^ Carat, matches a term if the term appears at the beginning of a paragraph or a line. For example, the below regex matches shirt, short and any character between sh and rt. Period, matches a single character of any single character, except the end of a line.
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