Check if email address valid or not in Java

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

Input : email = "contribute@geeksforgeeks.org"
Output : Yes

Input : email = "contribute@geeksforgeeks..org"
Output : No
There is an extra dot before org.

Prerequisite : Regular Expressions in Java
We use below regular expression provided in OWASP Validation Regex repository.

^[a-zA-Z0-9_+&*-] + (?:\\.[a-zA-Z0-9_+&*-]
+ )*@(?:[a-zA-Z0-9-]+\\.) + [a-zA-Z]{2, 7} 
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// Java program to check if an email address
// is valid using Regex.
import java.util.regex.Matcher;
import java.util.regex.Pattern;
  
class Test
{
    public static boolean isValid(String email)
    {
        String emailRegex = "^[a-zA-Z0-9_+&*-]+(?:\\."+
                            "[a-zA-Z0-9_+&*-]+)*@" +
                            "(?:[a-zA-Z0-9-]+\\.)+[a-z" +
                            "A-Z]{2,7}$";
                              
        Pattern pat = Pattern.compile(emailRegex);
        if (email == null)
            return false;
        return pat.matcher(email).matches();
    }
  
    /* driver function to check */
    public static void main(String[] args)
    {
        String email = "contribute@geeksforgeeks.org";
        if (isValid(email))
            System.out.print("Yes");
        else
            System.out.print("No");
    }
}

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Output:

Yes

This article is contributed by Pranav. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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