Every time you do so, Firefox inherits a new version of the Java Console (a debugging tool that’s useless to the vast majority of users). Unfortunately, the old ones don’t get deleted.

The Console’s readPassword() method performs the same function as readLine(), with the following two exceptions:. readPassword() does not echo text back while the user types readPassword() encrypts ...

This makes it fairly easy to retrofit Enigma Console into an existing Java application. Vladimir Roubtsov has programmed in a variety of languages for more than 12 years, including Java since 1995.