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import java.util.regex.Pattern; @Service public class EmailValidationService { private static final Pattern EMAIL_REGEX = Pattern.compile("^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$"); public boolean isValidEmail(String email) { return email != null && EMAIL_REGEX.matcher(email).matches(); } }
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