String emailRegex = "^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$";

        Pattern pat = Pattern.compile(emailRegex);

        Boolean matchFlag = pat.matcher("aabcc-gedt@163.com").find();

        if (matchFlag)

        {

            System.out.println("match");

        }

        else

        {

            System.out.println("do not match");

        }

        //简写

        if (Pattern.compile(emailRegex).matcher("aabcc-gedt@163.com").find())

        {

            System.out.println("match");

        }

        else

        {

            System.out.println("do not match");

        }