Email Validation format

Question

Hi All,

Could anyone help me to write email validation.

Below these Email format should not be included

Invalid email addresses

Abc.example.com (no @ character)

john..doe@example.com (double dot before @)

example@localhost (sent from localhost)

john.doe@example..com (double dot after @)

Please help me guys.

Thanks in advance

Praful Gupta · Answer

String emailString = 'testemail@localhost..com';

Boolean validemail = true;

if(!emailString.contains('@'))

{

if(emailString.substringAfter('@').contain('localhost'))

{

validemail = false;

}

if(emailString.substringAfter('@').contain('..'))

{

validemail = false;

}

if(emailString.substringBefore('@').contain('..'))

{

validemail = false;

}

}else

{

validemail = false;

}

if(!validemail )

{

addError

}

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