Java Utililty Methods JComboBox Event

List of utility methods to do JComboBox Event

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Description

The list of methods to do JComboBox Event are organized into topic(s).

Method

voidaddActionListener(ActionListener listener, JComboBox... components)
add Action Listener 
for (JComboBox component : components) {
    component.addActionListener(listener);
voidaddActionListeners(JComboBox comboBox, ActionListener[] listeners)
add Action Listeners 
for (ActionListener listener : listeners) {
    comboBox.addActionListener(listener);
JComboBoxcreateComboBox(String actionCommand, ActionListener listener, String... items)
create Combo Box 
JComboBox box = new JComboBox();
box.setEditable(false);
for (String item : items) {
    box.addItem(item);
if (listener != null) {
    box.addActionListener(listener);
    box.setActionCommand(actionCommand);
...
JComboBoxcreateComboBox(TYPE[] items, ActionListener... listeners)
create Combo Box 
JComboBox<TYPE> result = new JComboBox<>(items);
for (ActionListener listener : listeners) {
    result.addActionListener(listener);
return result;
voidinstallComboBoxCopyAction(JComboBox comboBox)
install Combo Box Copy Action 
final Component editorComponent = comboBox.getEditor().getEditorComponent();
if (!(editorComponent instanceof JTextComponent))
    return;
final InputMap inputMap = ((JTextComponent) editorComponent).getInputMap();
for (KeyStroke keyStroke : inputMap.allKeys()) {
    if (DefaultEditorKit.copyAction.equals(inputMap.get(keyStroke))) {
        comboBox.getInputMap().put(keyStroke, DefaultEditorKit.copyAction);
comboBox.getActionMap().put(DefaultEditorKit.copyAction, new AbstractAction() {
    @Override
    public void actionPerformed(final ActionEvent e) {
        if (!(e.getSource() instanceof JComboBox))
            return;
        final JComboBox comboBox = (JComboBox) e.getSource();
        final String text;
        final Object selectedItem = comboBox.getSelectedItem();
        if (selectedItem instanceof String) {
            text = (String) selectedItem;
        } else {
            final Component component = comboBox.getRenderer().getListCellRendererComponent(new JList(),
                    selectedItem, 0, false, false);
            if (component instanceof JLabel) {
                text = ((JLabel) component).getText();
            } else if (component != null) {
                final String str = component.toString();
                text = str == null || str.startsWith(component.getClass().getName() + "[") ? null : str;
            } else {
                text = null;
        if (text != null) {
            final JTextField textField = new JTextField(text);
            textField.selectAll();
            textField.copy();
});
voidsetAction(JComboBox cmb, ActionListener listener, String actionCommand)
set Action 
cmb.addActionListener(listener);
cmb.setActionCommand(actionCommand);