Why the encryption text is changeable in an applet?

I 'am write an applet using BlowfishKey encryption algorithism in SDK1.4.1 ,
but the encryted result is changeable referring the same unencrypted
text.when I minimize the blowser and reopen it ,the encrpted result
changes.and when in an application ,the result is not change. I want to
know why?
Thanks

This question make no sense but I will try a guess. Applets have the init(),
start(), stop(), destroy() methods which get called at various states of
the applets life cycle. Is it possible that the encryption process is being
executed in one of these methods or from one of these methods? If so every
time you maximize/minimize your browser the encryption process is being
rerun. Now the ciphertext output would be different because of several
possible reasons.
1) You are using an algorithm that requires an IV such as CBC mode and that
IV is being generated randomly each time the encryption is being performed.
2) You are generating the SecretKey each time you do an encryption. Thus the
key used to encrypt the data is different each time.
Those are jsut some guesses but it seems to fit what I could decern of your
question.

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