title: Java program doesn't response when encrypting the large files is running
body: <p>I am working on an Encryption/Decryption java program with AES CBC mode, and I used <code>cipher.update()</code> with <code>cipher.doFinal()</code> to be to deal with large files and avoid <code>outOfMemoryException</code>.<br /><br />
  Now, when encrypting/decrypting large files (like 2 GB), in background everything is working perfectly (I can see in the Intellij run) but the GUI of my program doesn't respond when this processing is running and till the encryption/decryption is done. <br /><br />
  Moreover, there is no errors in run, so what could be the issue? </p>