Check if Email Address is Valid or not in Java

Given a string, find if the given string is a valid email or not.

Input : email = "review-team@geeksforgeeks.org"
Output : Yes

Input : email = "contribute@neveropen..org"
Output : No
Explanation : There is an extra dot(.) before org.

Prerequisite: Regular Expressions in Java 

Regular Expressions 

Regular Expressions or Regex is an API for defining String patterns that can be used for searching, manipulating, and editing a string in Java. Email validation and passwords are a few areas of strings where Regex is widely used to define the constraints. Regular Expressions are provided under java.util.regex package. 

In order to check that an email address is valid or not, we use the below-given regular expression provided in the OWASP Validation Regex repository.

^[a-zA-Z0-9_+&*-] + (?:\\.[a-zA-Z0-9_+&*-]
+ )*@(?:[a-zA-Z0-9-]+\\.) + [a-zA-Z]{2, 7}$ 

Code – 

review-team@geeksforgeeks.org - Yes
writing.geeksforgeeks.org - No

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