public static void main(String[] args) {
			JDialog dialog = new JDialog((Window) null, "Autocompleter Demo");
			JTextField field = new JTextField();

			dialog.add(field);

			TextFieldAutocompleter<String> auto =
				new TextFieldAutocompleter<>(new AutocompletionModel<String>() {
					Set<String> strings = new HashSet<>(Arrays.asList(new String[] { "Test",
						"Testing", "Another", "Yet another", "Yet still more" }));
					{
						for (int i = 0; i < 20; i++) {
							strings.add("Item " + i);
						}
					}

					@Override
					public Collection<String> computeCompletions(String text) {
						Set<String> matching = new TreeSet<>();
						for (String s : strings) {
							if (s.startsWith(text)) {
								matching.add(s.substring(text.length()));
							}
						}
						return matching;
					}
				});

			auto.attachTo(field);

			dialog.setBounds(2560, 500, 400, 200);
			dialog.setModal(true);
			dialog.setVisible(true);
		}
A demonstration of the autocompleter on a single text field.

<p>
The autocompleter offers the tails from a list of strings that start with the text before the
caret.
Ghidra/Framework/Docking/src/main/java/docking/widgets/autocomplete/TextFieldAutocompleter.java