Validating email with regular expression


Let’s imagine that my email address is [email protected]’s 27 stabs at the keyboard that could go awry.The mapping logic should be able to identify all the valid values.

validating email with regular expression-19

List emails = new Array List(); emails.add("[email protected]"); emails.add("[email protected]"); emails.add("[email protected]"); emails.add("[email protected]"); emails.add("[email protected]"); emails.add("[email protected]"); emails.add("[email protected]"); //Invalid emails emails.add("@yahoo.com"); String regex = "^[A-Za-z0-9 _.-] @(.

)$"; Pattern pattern = Pattern.compile(regex); for(String email : emails) Output: [email protected]: true [email protected] : true [email protected]: true [email protected]: true [email protected] : true [email protected] : true [email protected] : true @: false This regex example uses all the characters permitted by RFC 5322, which governs the email message format. :[a-z A-Z0-9-] \\.) [a-z A-Z]$"; Pattern pattern = Pattern.compile(regex); for(String email : emails) Output: [email protected]: true [email protected] : true [email protected]: true [email protected]: true [email protected]: true [email protected]: false [email protected]

For complete notes on programming in PL/SQL, we recommend the book Advanced PL/SQL: The Definitive Reference by Boobal Ganesan.

From this day forward, you will no longer squander your time trying to work out the perfect regex to validate email addresses.

provide the foundation for describing or matching data according to defined syntax rules.

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