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Trail: Creating a GUI with JFC/Swing
Lesson: Writing Event Listeners
Writing Event Listeners
Introduction to Event Listeners
General Information about Writing Event Listeners
Listeners Supported by Swing Components
Implementing Listeners for Commonly Handled Events
How to Write an Action Listener
How to Write a Caret Listener
How to Write a Change Listener
How to Write a Component Listener
How to Write a Container Listener
How to Write a Document Listener
How to Write a Focus Listener
How to Write an Internal Frame Listener
How to Write an Item Listener
How to Write a Key Listener
How to Write a List Data Listener
How to Write a List Selection Listener
How to Write a Mouse Listener
How to Write a Mouse-Motion Listener
How to Write a Mouse-Wheel Listener
How to Write a Property Change Listener
How to Write a Table Model Listener
How to Write a Tree Expansion Listener
How to Write a Tree Model Listener
How to Write a Tree Selection Listener
How to Write a Tree-Will-Expand Listener
How to Write an Undoable Edit Listener
How to Write Window Listeners
Listener API Table
Solving Common Event-Handling Problems
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Listener API Table

> In the table that follows, the first column gives the name of the listener interface, with either a link to the tutorial page that discusses the listener or, if the tutorial doesn't discuss the listener, a link to the API docs. The second column names the corresponding adapter class, if any. (For a discussion of using adapters, see Using Adapters and Inner Classes to Handle Events.) The third column lists the methods that the listener interface contains and shows the type of the event object passed into the method. Typically, the listener, the adapter, and the event type have the same name prefix, but this is not always the case.

> To see which Swing components can fire which kinds of events, see Listeners Supported by Swing Components.

> Listener Interface | Adapter Class | Listener Methods
> --- | --- | ---
> `ActionListener` | none | `actionPerformed(ActionEvent)`
> `AncestorListener` | none | `ancestorAdded(AncestorEvent)` `ancestorMoved(AncestorEvent)` `ancestorRemoved(AncestorEvent)`
> `CaretListener` | none | `caretUpdate(CaretEvent)`
> `CellEditorListener` | none | `editingStopped(ChangeEvent)` `editingCanceled(ChangeEvent)`
> `ChangeListener` | none | `stateChanged(ChangeEvent)`
> `ComponentListener` | `ComponentAdapter` | `componentHidden(ComponentEvent)` `componentMoved(ComponentEvent)` `componentResized(ComponentEvent)` `componentShown(ComponentEvent)`
> `ContainerListener` | `ContainerAdapter` | `componentAdded(ContainerEvent)` `componentRemoved(ContainerEvent)`
> `DocumentListener` | none | `changedUpdate(DocumentEvent)` `insertUpdate(DocumentEvent)` `removeUpdate(DocumentEvent)`
> `ExceptionListener` (introduced in 1.4) | none | `exceptionThrown(Exception)`
> `FocusListener` | `FocusAdapter` | `focusGained(FocusEvent)` `focusLost(FocusEvent)`
> `HierarchyBoundsListener` (introduced in 1.3) | `HierarchyBoundsAdapter` | `ancestorMoved(HierarchyEvent)` `ancestorResized(HierarchyEvent)`
> `HierarchyListener` (introduced in 1.3) | none | `hierarchyChanged(HierarchyEvent)`
> `HyperlinkListener` | none | `hyperlinkUpdate(HyperlinkEvent)`
> `InputMethodListener` | none | `caretPositionChanged(InputMethodEvent)` `inputMethodTextChanged(InputMethodEvent)`
> `InternalFrameListener` | `InternalFrameAdapter` | `internalFrameActivated(InternalFrameEvent)` `internalFrameClosed(InternalFrameEvent)` `internalFrameClosing(InternalFrameEvent)` `internalFrameDeactivated(InternalFrameEvent)` `internalFrameDeiconified(InternalFrameEvent)` `internalFrameIconified(InternalFrameEvent)` `internalFrameOpened(InternalFrameEvent)`
> `ItemListener` | none | `itemStateChanged(ItemEvent)`
> `KeyListener` | `KeyAdapter` | `keyPressed(KeyEvent)` `keyReleased(KeyEvent)` `keyTyped(KeyEvent)`
> `ListDataListener` | none | `contentsChanged(ListDataEvent)` `intervalAdded(ListDataEvent)` `intervalRemoved(ListDataEvent)`
> `ListSelectionListener` | none | `valueChanged(ListSelectionEvent)`
> `MenuDragMouseListener` | none | `menuDragMouseDragged(MenuDragMouseEvent)` `menuDragMouseEntered(MenuDragMouseEvent)` `menuDragMouseExited(MenuDragMouseEvent)` `menuDragMouseReleased(MenuDragMouseEvent)`
> `MenuKeyListener` | none | `menuKeyPressed(MenuKeyEvent)` `menuKeyReleased(MenuKeyEvent)` `menuKeyTyped(MenuKeyEvent)`
> `MenuListener` | none | `menuCanceled(MenuEvent)` `menuDeselected(MenuEvent)` `menuSelected(MenuEvent)`
> `MouseInputListener` (extends `MouseListener` and `MouseMotionListener` | `MouseInputAdapter` | `mouseClicked(MouseEvent)` `mouseEntered(MouseEvent)` `mouseExited(MouseEvent)` `mousePressed(MouseEvent)` `mouseReleased(MouseEvent)` `mouseDragged(MouseEvent)` `mouseMoved(MouseEvent)`
> `MouseListener` | `MouseAdapter`, `MouseInputAdapter` | `mouseClicked(MouseEvent)` `mouseEntered(MouseEvent)` `mouseExited(MouseEvent)` `mousePressed(MouseEvent)` `mouseReleased(MouseEvent)`
> `MouseMotionListener` | `MouseMotionAdapter`, `MouseInputAdapter` | `mouseDragged(MouseEvent)` `mouseMoved(MouseEvent)`
> `MouseWheelListener` (introduced in 1.4) | none | `mouseWheelMoved(MouseWheelEvent)`
> `PopupMenuListener` | none | `popupMenuCanceled(PopupMenuEvent)` `popupMenuWillBecomeInvisible(PopupMenuEvent)` `popupMenuWillBecomeVisible(PopupMenuEvent)`
> `PropertyChangeListener` | none | `propertyChange(PropertyChangeEvent)`
> `TableColumnModelListener` | none | `columnAdded(TableColumnModelEvent)` `columnMoved(TableColumnModelEvent)` `columnRemoved(TableColumnModelEvent)` `columnMarginChanged(ChangeEvent)` `columnSelectionChanged(ListSelectionEvent)`
> `TableModelListener` | none | `tableChanged(TableModelEvent)`
> `TreeExpansionListener` | none | `treeCollapsed(TreeExpansionEvent)` `treeExpanded(TreeExpansionEvent)`
> `TreeModelListener` | none | `treeNodesChanged(TreeModelEvent)` `treeNodesInserted(TreeModelEvent)` `treeNodesRemoved(TreeModelEvent)` `treeStructureChanged(TreeModelEvent)`
> `TreeSelectionListener` | none | `valueChanged(TreeSelectionEvent)`
> `TreeWillExpandListener` | none | `treeWillCollapse(TreeExpansionEvent)` `treeWillExpand(TreeExpansionEvent)`
> `UndoableEditListener` | none | `undoableEditHappened(UndoableEditEvent)`
> `VetoableChangeListener` | none | `vetoableChange(PropertyChangeEvent)`
> `WindowFocusListener` (introduced in 1.4) | `WindowAdapter` | `windowGainedFocus(WindowEvent)` `windowLostFocus(WindowEvent)`
> `WindowListener` | `WindowAdapter` | `windowActivated(WindowEvent)` `windowClosed(WindowEvent)` `windowClosing(WindowEvent)` `windowDeactivated(WindowEvent)` `windowDeiconified(WindowEvent)` `windowIconified(WindowEvent)` `windowOpened(WindowEvent)`
> `WindowStateListener` (introduced in 1.4) | `WindowAdapter` | `windowStateChanged(WindowEvent)`

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