Java正则表达式的最简单应用

        String emailRegex = "^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$";
        Pattern pat = Pattern.compile(emailRegex);
        Boolean matchFlag = pat.matcher("[e-mail]").find();
        if (matchFlag)
        {
            System.out.println("match");
        }
        else
        {
            System.out.println("do not match");
        }

        //简写
        if (Pattern.compile(emailRegex).matcher("[e-mail]").find())
        {
            System.out.println("match");
        }
        else
        {
            System.out.println("do not match");
        }