autocompletion : Java Glossary
Autocompletion is a feature of word processors and data entry programs that means you
don’t have to type an entire word, just enough of it to resolve any
ambiguities. Often the program will show you several possible completions and let you
click or arrow to select one rather than typing the whole word. This, of course, works
best in multiple choice situations. You might use autocompletion in a custom
JComboBox where the possibilities are fixed at compile
time, or are dynamically determined from a database.