Java正則表達式校驗郵箱和手機號

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CheckMobileAndEmail {
	/**
	  * 驗證郵箱地址是否正確
	  * @param email
	  * @return
	  */
	 public static boolean checkEmail(String email){
	  boolean flag = false;
	  try{
	   String check = "^([a-z0-9A-Z]+[-|.]?)+[a-z0-9A-Z]@
         ([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?.)+[a-zA-Z]{2,}$";
	   Pattern regex = Pattern.compile(check);
	   Matcher matcher = regex.matcher(email);
	   flag = matcher.matches();
	  }catch(Exception e){
	   flag = false;
	  }
	  
	  return flag;
	 }
	 /**
	  * 驗證手機號碼
	  * @param mobiles
	  * @return  [0-9]{5,9}
	  */
	 public static boolean isMobileNO(String mobiles){
	  boolean flag = false;
	  try{
	   Pattern p = Pattern.compile("^((13[0-9])|(15[^4,D])|(18[0,5-9]))d{8}$");
	   Matcher m = p.matcher(mobiles);
	   flag = m.matches();
	  }catch(Exception e){
	   flag = false;
	  }
	  return flag;
	 }
	 
	 public static boolean isNum(String number){
		  boolean flag = false;
		  try{
		   Pattern p = Pattern.compile("^[0-9]{5}$");
		   Matcher m = p.matcher(number);
		   flag = m.matches();
		  }catch(Exception e){
		   flag = false;
		  }
		  return flag;
		 }
}