Regex for validating emails palm updating databases

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[email protected]"); emails.add("[email protected]"); //Invalid emails emails.add("@yahoo.com"); String regex = "^[a-z A-Z0-9_!`~^.-] @[a-z A-Z0-9.-] $"; Pattern pattern = Pattern.compile(regex); for(String email : emails) Output: [email protected]: true [email protected] : true [email protected]: true user?

|\\[^\x80-\xff])*\])[\040\t]*(?

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[email protected]%*– email’s tld is only allow character and digit 9. NET" offers (p207) the following for validating an email address in a Regular Expression Validator: Validation Expression = ".*@.*\..*" Sadly, it allows whitespace in the email address, eg 'john [email protected] domain.com' Friedl in "Mastering Regular Expressions" offers a more exacting /\w[-.\w]*\@[-a-z0-9] (\.[-a-z0-9] )*\.(com|edu|gov|int|mil|net|org|biz|info|name|museum|coop|aero|org|name|[a-z]|[a-z])/i which rejects every address I've tried. regular expression pattern to separate the domain name from the email address.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]"); //Invalid emails emails.add(".[email protected]"); emails.add("[email protected]"); emails.add("[email protected].com"); emails.add("[email protected]"); emails.add("[email protected]"); String regex = "^[\w![email protected] : true [email protected] : true @: false Both the local part and the domain name can contain one or more dots, but no two dots can appear right next to each other.

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