Email Validation

import java.util.regex.Pattern;

class Main {

public static void main(String[] args) {

String s1 = "[email protected]";

String s2 = "umam@email";

String s3 = "[email protected]";

String s4 = "[email protected].";

String s5 = "[email protected]";

String s6 = "[email protected]";

System.out.println(isValidEmailId(s1));

System.out.println(isValidEmailId(s2));

System.out.println(isValidEmailId(s3));

System.out.println(isValidEmailId(s4));

System.out.println(isValidEmailId(s5));

System.out.println(isValidEmailId(s6));

}

private static boolean isValidEmailId(String email) {

System.out.print(email + " => ");

return Pattern.compile("(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])").matcher(email).matches();

}

}