此程序可激活高级版和专业版功能，需要注意的是每次重新打开FinalShell以后都要重新激活，好消息的是上次的激活码还会在输入里，所以实际上只需要每次去点击激活按钮即可，不需要每次重新跑程序。

public class FinalShell {
    public static void main(String[] args) throws Exception {
        System.out.print("请输入FinalShell的离线机器码：");
        Scanner reader = new Scanner(System.in);
        String machineCode = reader.nextLine();
        generateKey(machineCode);
    }
    public static void generateKey(String hardwareId) throws Exception {
        String proKey = transform(61305 + hardwareId + 8552);
        String pfKey = transform(2356 + hardwareId + 13593);
        System.out.println("请将此行复制到离线激活中-高级版：" + proKey);
        System.out.println("请将此行复制到离线激活中-专业版：" + pfKey);
    }

    public static String transform(String str) throws Exception {
        return hashMD5(str).substring(8, 24);
    }
    public static String hashMD5(String str) throws Exception {
        MessageDigest digest = MessageDigest.getInstance("MD5");
        byte[] hashed = digest.digest(str.getBytes());
        StringBuilder sb = new StringBuilder();
        for (byte b : hashed) {
            int len = b & 0xFF;
            if (len < 16) {
                sb.append("0");
            }
            sb.append(Integer.toHexString(len));
        }
        return sb.toString();
    }
}