这是一个通过调用Java自带的DES加密解密函数做的程序，有有好的界面，可以对文件进行加密解密。在打开需要加密或者解密的文件之后，需要新建.txt文件以保存加密或者解密的文件，源文件不受影响。程序中设置了过滤器，只能看到txt文件或者普通文件夹-This is a built-in Java by calling DES encryption and decryption functions do the procedure, there is a good interface, can file encryption and decryption. After opening the need to encrypt or decrypt files, you need to create a .txt file to save the encryption or decryption of files, source files are not affected. Program set up filters, only to see ordinary txt file or folder