Clipboarder lets you save data and retrieve data in a quick and dirty way. I use it a lot when I am doing prototyping. It's basically just a wrapper around the java serialization API.

Usage:

// save any serializable object List widgets = getListFromDb(); Clipboarder.put(widget, "widgets_version12");

// retrieve the object in another program List widgets = (List) Clipboarder.get("widgets_version12");