The exclamations can be anywhere in the string. My new answer is don't use regular expressions for that. Is there a way to match a fixed number of characters in a fixed length string via regex Example, I want to match all strings where the length of string is 5 and there are exactly 3 alphabets and 2 exclamations (). Update: The OP clarified that he's trying to limit the value, not the length. Means "at least 5, but not more than 10 digits". If you just want to limit the number of characters matched by an expression, most regular expressions support bounds by using braces. one which uses the previously extracted value to verify that its own match does not exceed the specified length.one to match the maximum length you'd like to use.Suppose you need a way to formalize and refer to all the strings that make up the format of an email address. A regex defines a set of strings, usually united for a given purpose. Your best bet is to have two separate regular expressions: What Is a Java Regular Expression A Java regular expression, or Java regex, is a sequence of characters that specifies a pattern which can be searched for in a text. This usually isn't possible in a single pass. Your example suggests that you'd like to grab a number from inside the regex and then use this number to place a maximum length on another part that is matched later in the regex. Repetition operators repeat the preceding regular expression a specified number of times. For example, xy' (two match-self operators) matches xy'. Is there a way to limit a regex to 100 characters WITH regex? The result is a regular expression that will match a string if a matches its first part and b matches the rest.
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