Today I tried to import the private key generated in Arizen to the Swing. And I haven't succeeded in doing so. There is no button in the interface of Arizen to export the private key. So you need to use some 3rd party binary editor, find a privatekey inside the file (and among other private keys) and copy it.  
Why so complicated?

We urgently need a wallet encryption in Swing.
And we also need a private key export in Arizen.

These are not big deals (in terms of new lines of code) for your programmers! All the necessary libraries (like encryption libraries for wallet protection) are already there.