email 형식 검사하는 java regex 를 이용한 소스

package kr.pe.okjsp.util;

import java.util.regex.Pattern;

public class FormatEmail {

 public static void main(String[] args) {
        String [] mails = {"okjsp@okjsp.pe.kr",
                            "@okjsp.pe.kr",
                            "hello@kr",
                            "happ_okjsp.pe.kr"};
                           
        for(int i=0; i<mails.length; i++) {
            System.out.println(mails[i] + " : " + isEmail(mails[i]));
        } // end for
 }
   
    public static boolean isEmail(String email) {
        if (email==null) return false;
        boolean b = Pattern.matches(
            "[\\w\\~\\-\\.]+@[\\w\\~\\-]+(\\.[\\w\\~\\-]+)+",
            email.trim());
        return b;
    }
}