Java正则表达式校验邮箱和手机号

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CheckMobileAndEmail {
/**
* 验证邮箱地址是否正确
* @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;
}
/**
* 验证手机号码
* @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;
}
}