编写一个java应用程序。用户从键盘输入一个1-9999之间的数，程序将判断这个数是几位数，并判断这个数是否回文数。回文数是指将数含有的数字逆序排列后得到的数和原数相同，例如12121,4224,6778776等都是回文数。

1）程序具有判断用户的输入是否为合法整数的功能。对非法输入（例如含有字母）要进行处理。

2）要判断输入数的位数，并输出相关信息。

3）要判断是否回文数。



二、二战期间，英国情报人员获取德军的一机密电报，电报的内容为：

bzdz izu sxgzd vs lh ,vpzg woflsh vs vwrh vhlsddlmp glm wrw gzy vsg .gflyz gstfzu bvsg gzsd hdmlp vml lm ,hghzvy wmz hwiry mvvdgvy izd z hzd vivsg ,ltz tmlo tmlO

情报人员已经知道，这段电报的加密方式为：

1. 首先将字符串的顺序颠倒。

2. 字母互换的规律为：A->Z, B-Y, C-X...X->C, Y->B, Z-A a->z, b->y, c-x...x->c, y->b, z->a.

3. 非字母字符保持不变。

请编程帮助情报人员破译这份机密电报。给出注释良好的源程序和程序运行后的结果。

-Write a java application. User keyboard input from a number between 1-9999, the program will determine the number of a few are a few, and to determine whether the number of palindrome number. Palindrome refers to a number of the figure contains a number of reverse order and after a number of the original number of the same, such as the number of 12121,4224,6778776 are palindrome.

1) procedures to determine whether the user s input as a legitimate function of an integer. Illegal input (such as with letters) to deal with.

2) To determine the median number of input and output-related information.

3) To determine whether the palindrome number.



Second, during World War II, British intelligence agents to obtain a confidential German Telegram, Telegram says:

bzdz izu sxgzd vs lh, vpzg woflsh vs vwrh vhlsddlmp glm wrw gzy vsg. gflyz gstfzu bvsg gzsd hdmlp vml lm, hghzvy wmz hwiry mvvdgvy izd z hzd vivsg, ltz tmlo tmlO

Intelligence agents are already aware, this encryption method