Listening for Changes to the Selected Item in a JComboBox Component : ComboBox « Swing JFC « Java

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Java » Swing JFC » ComboBox Screenshots  Listening for Changes to the Selected Item in a JComboBox Component   import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.JComboBox; public class Main {   public static void main(String[] argv) throws Exception {     String[] items = { "item1", "item2" };     JComboBox cb = new JComboBox(items);     cb.setEditable(true);     MyItemListener actionListener = new MyItemListener();     cb.addItemListener(actionListener);   } } class MyItemListener implements ItemListener {   // This method is called only if a new item has been selected.   public void itemStateChanged(ItemEvent evt) {     JComboBox cb = (JComboBox) evt.getSource();     Object item = evt.getItem();     if (evt.getStateChange() == ItemEvent.SELECTED) {       // Item was just selected     } else if (evt.getStateChange() == ItemEvent.DESELECTED) {       // Item is no longer selected     }   } }        Related examples in the same category 1.  Combobox combines a button or editable field and a drop-down list. 2.  Using drop-down lists 3.  A fancy example of JComboBox with a custom renderer and editor 4.  Editable ComboBox 5.  Create a simple combobox 6.  Font Chooser ComboBox 7.  Color combobox renderer 8.  Select the combobox by choose the nearby label 9.  ComoboBox loads and saves items automatically from a file 10.  Sharing a Model between a JList and JComboBox 11.  ComboBox Demo 2 12.  Custom ComboBox with Image 13.  ComboBox Demo 14.  List: Shared Data Sample 15.  Selecting Combo Sample 16.  MultiKey Combo 17.  PopupCombo Sample 18.  Dual Sample: JList and ComboBox 19.  ComboBox Sample 20.  Color ComboBox: ComboBoxEditor Demo 21.  Determining When the Menu of a JComboBox Component Is Displayed 22.  Listening for Action Events from a JComboBox Component 23.  Setting the Number of Visible Items in the Menu of a JComboBox Component 24.  Displaying the Menu in a JComboBox Component Using a Keystroke If the Selected Item Is Not Unique 25.  Displaying the Menu in a JComboBox Component Using a Keystroke 26.  Determining If the Menu of a JComboBox Component Is Visible 27.  Selecting an Item in a JComboBox Component with Multiple Keystrokes 28.  Adding and Removing an Item in a JComboBox Component 29.  Add an item after the first item 30.  Add an item to the end of the list 31.  Remove first item 32.  Remove the last item 33.  Remove all items 34.  Getting the Items in a JComboBox Component 35.  Getting and Setting the Selected Item in a JComboBox Component 36.  If the combobox is editable, the new value can be any value 37.  Creating a read-only and editable JComboBox Component 38.  ArrayListComboBoxModel Demo