upload textfile using cypertext using java

1import javax.crypto.Cipher;
2import javax.crypto.KeyGenerator;
3import javax.crypto.SecretKey;
4
5public class HelloWorld{
6    public static void main(String[] args) {
7
8        try{
9            KeyGenerator keygenerator = KeyGenerator.getInstance("DES");
10            SecretKey myDesKey = keygenerator.generateKey();
11
12            Cipher desCipher;
13            desCipher = Cipher.getInstance("DES");
14
15
16            byte[] text = "No body can see me.".getBytes("UTF8");
17
18
19            desCipher.init(Cipher.ENCRYPT_MODE, myDesKey);
20            byte[] textEncrypted = desCipher.doFinal(text);
21
22            String s = new String(textEncrypted);
23            System.out.println(s);
24
25            desCipher.init(Cipher.DECRYPT_MODE, myDesKey);
26            byte[] textDecrypted = desCipher.doFinal(textEncrypted);
27
28            s = new String(textDecrypted);
29            System.out.println(s);
30        }catch(Exception e)
31        {
32            System.out.println("Exception");
33        }
34    }
35}
36