邮箱格式校验：正则

public static void main(String[] args) {  

 String emailPatten="(^?:[a-zA-Z0-9]+[_\\-+.]?)*[a-zA-Z0-9]+@(?:([a-zA-Z0-9]+-?)*[a-zA-Z0-9]+\\.)+([a-zA-Z]{2,})+$";  

 String b="R9XY002@frEejob.cc";   

 System.out.println(Pattern.matches(emailPatten, b));      

 }