A user saves their current interactions history to a file on their desktop named "history.hist". A few days later, they do the same thing. Because their desktop is cluttered with files, they don't notice that there is already a file with that same name, so they reuse it.
DrJava should alert them that a file with the same name already exists, and ask if the user really wants to overwrite it. Currently, DrJava silently overwrites the file without a warning or a way to avert disaster.