You can find your name in a list of students using regex. You can not expect to find first a match with first 3 z’s “lizzzzzy” an then with last 3 z’s “lizzzzzy”. For example, if you search “zzz” in “lizzzzzy” then you will only find a single match. If a char is parsed once, it will not be parsed again. The Java string is parsed from left to right for applying any regex. This process if referred to as “applying” regex on text. You can search, manipulate or edit text/strings using regex. ![]() In other words, regex help you define the criteria to match/find one string or sequence of characters in another given string. These expressions define how exactly you want the search string to look like. Regex or Regular Expressions are used to search a pre-defined pattern of strings or characters in Java.
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