Package javax.swing

Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms.

See: Description

  • Interface Summary 
    Interface Description
    Action
    The Action interface provides a useful extension to the ActionListener interface in cases where the same functionality may be accessed by several controls.
    BoundedRangeModel
    Defines the data model used by components like Sliders and ProgressBars.
    ButtonModel
    State model for buttons.
    CellEditor
    This interface defines the methods any general editor should be able to implement.
    ComboBoxEditor
    The editor component used for JComboBox components.
    ComboBoxModel<E>
    A data model for a combo box.
    DesktopManager
    DesktopManager objects are owned by a JDesktopPane object.
    Icon
    A small fixed size picture, typically used to decorate components.
    JComboBox.KeySelectionManager
    The interface that defines a KeySelectionManager.
    ListCellRenderer<E>
    Identifies components that can be used as "rubber stamps" to paint the cells in a JList.
    ListModel<E>
    This interface defines the methods components like JList use to get the value of each cell in a list and the length of the list.
    ListSelectionModel
    This interface represents the current state of the selection for any of the components that display a list of values with stable indices.
    MenuElement
    Any component that can be placed into a menu should implement this interface.
    MutableComboBoxModel<E>
    A mutable version of ComboBoxModel.
    Painter<T>
    A painting delegate.
    Renderer
    Defines the requirements for an object responsible for "rendering" (displaying) a value.
    RootPaneContainer
    This interface is implemented by components that have a single JRootPane child: JDialog, JFrame, JWindow, JApplet, JInternalFrame.
    Scrollable
    An interface that provides information to a scrolling container like JScrollPane.
    ScrollPaneConstants
    Constants used with the JScrollPane component.
    SingleSelectionModel
    A model that supports at most one indexed selection.
    SpinnerModel
    A model for a potentially unbounded sequence of object values.
    SwingConstants
    A collection of constants generally used for positioning and orienting components on the screen.
    UIDefaults.ActiveValue
    This class enables one to store an entry in the defaults table that's constructed each time it's looked up with one of the getXXX(key) methods.
    UIDefaults.LazyValue
    This class enables one to store an entry in the defaults table that isn't constructed until the first time it's looked up with one of the getXXX(key) methods.
    WindowConstants
    Constants used to control the window-closing operation.

      

  • Class Summary 
    Class Description
    AbstractAction
    This class provides default implementations for the JFC Action interface.
    AbstractButton
    Defines common behaviors for buttons and menu items.
    AbstractCellEditor
    A base class for CellEditors, providing default implementations for the methods in the CellEditor interface except getCellEditorValue().
    AbstractListModel<E>
    The abstract definition for the data model that provides a List with its contents.
    AbstractSpinnerModel
    This class provides the ChangeListener part of the SpinnerModel interface that should be suitable for most concrete SpinnerModel implementations.
    ActionMap
    ActionMap provides mappings from Objects (called keys or Action names) to Actions.
    BorderFactory
    Factory class for vending standard Border objects.
    Box
    A lightweight container that uses a BoxLayout object as its layout manager.
    Box.Filler
    An implementation of a lightweight component that participates in layout but has no view.
    BoxLayout
    A layout manager that allows multiple components to be laid out either vertically or horizontally.
    ButtonGroup
    This class is used to create a multiple-exclusion scope for a set of buttons.
    CellRendererPane
    This class is inserted in between cell renderers and the components that use them.
    ComponentInputMap
    A ComponentInputMap is an InputMap associated with a particular JComponent.
    DebugGraphics
    Graphics subclass supporting graphics debugging.
    DefaultBoundedRangeModel
    A generic implementation of BoundedRangeModel.
    DefaultButtonModel
    The default implementation of a Button component's data model.
    DefaultCellEditor
    The default editor for table and tree cells.
    DefaultComboBoxModel<E>
    The default model for combo boxes.
    DefaultDesktopManager
    This is an implementation of the DesktopManager.
    DefaultFocusManager
    This class has been obsoleted by the 1.4 focus APIs.
    DefaultListCellRenderer
    Renders an item in a list.
    DefaultListCellRenderer.UIResource
    A subclass of DefaultListCellRenderer that implements UIResource.
    DefaultListModel<E>
    This class loosely implements the java.util.Vector API, in that it implements the 1.1.x version of java.util.Vector, has no collection class support, and notifies the ListDataListeners when changes occur.
    DefaultListSelectionModel
    Default data model for list selections.
    DefaultRowSorter<M,I>
    An implementation of RowSorter that provides sorting and filtering around a grid-based data model.
    DefaultRowSorter.ModelWrapper<M,I>
    DefaultRowSorter.ModelWrapper is responsible for providing the data that gets sorted by DefaultRowSorter.
    DefaultSingleSelectionModel
    A generic implementation of SingleSelectionModel.
    FocusManager
    This class has been obsoleted by the 1.4 focus APIs.
    GrayFilter
    An image filter that "disables" an image by turning it into a grayscale image, and brightening the pixels in the image.
    GroupLayout
    GroupLayout is a LayoutManager that hierarchically groups components in order to position them in a Container.
    ImageIcon
    An implementation of the Icon interface that paints Icons from Images.
    InputMap
    InputMap provides a binding between an input event (currently only KeyStrokes are used) and an Object.
    InputVerifier
    The purpose of this class is to help clients support smooth focus navigation through GUIs with text fields.
    InternalFrameFocusTraversalPolicy
    A FocusTraversalPolicy which can optionally provide an algorithm for determining a JInternalFrame's initial Component.
    JApplet
    An extended version of java.applet.Applet that adds support for the JFC/Swing component architecture.
    JButton
    An implementation of a "push" button.
    JCheckBox
    An implementation of a check box -- an item that can be selected or deselected, and which displays its state to the user.
    JCheckBoxMenuItem
    A menu item that can be selected or deselected.
    JColorChooser
    JColorChooser provides a pane of controls designed to allow a user to manipulate and select a color.
    JComboBox<E>
    A component that combines a button or editable field and a drop-down list.
    JComponent
    The base class for all Swing components except top-level containers.
    JDesktopPane
    A container used to create a multiple-document interface or a virtual desktop.
    JDialog
    The main class for creating a dialog window.
    JEditorPane
    A text component to edit various kinds of content.
    JFileChooser
    JFileChooser provides a simple mechanism for the user to choose a file.
    JFormattedTextField
    JFormattedTextField extends JTextField adding support for formatting arbitrary values, as well as retrieving a particular object once the user has edited the text.
    JFormattedTextField.AbstractFormatter
    Instances of AbstractFormatter are used by JFormattedTextField to handle the conversion both from an Object to a String, and back from a String to an Object.
    JFormattedTextField.AbstractFormatterFactory
    Instances of AbstractFormatterFactory are used by JFormattedTextField to obtain instances of AbstractFormatter which in turn are used to format values.
    JFrame
    An extended version of java.awt.Frame that adds support for the JFC/Swing component architecture.
    JInternalFrame
    A lightweight object that provides many of the features of a native frame, including dragging, closing, becoming an icon, resizing, title display, and support for a menu bar.
    JInternalFrame.JDesktopIcon
    This component represents an iconified version of a JInternalFrame.
    JLabel
    A display area for a short text string or an image, or both.
    JLayer<V extends Component>
    JLayer is a universal decorator for Swing components which enables you to implement various advanced painting effects as well as receive notifications of all AWTEvents generated within its borders.
    JLayeredPane
    JLayeredPane adds depth to a JFC/Swing container, allowing components to overlap each other when needed.
    JList<E>
    A component that displays a list of objects and allows the user to select one or more items.
    JList.DropLocation
    A subclass of TransferHandler.DropLocation representing a drop location for a JList.
    JMenu
    An implementation of a menu -- a popup window containing JMenuItems that is displayed when the user selects an item on the JMenuBar.
    JMenuBar
    An implementation of a menu bar.
    JMenuItem
    An implementation of an item in a menu.
    JOptionPane
    JOptionPane makes it easy to pop up a standard dialog box that prompts users for a value or informs them of something.
    JPanel
    JPanel is a generic lightweight container.
    JPasswordField
    JPasswordField is a lightweight component that allows the editing of a single line of text where the view indicates something was typed, but does not show the original characters.
    JPopupMenu
    An implementation of a popup menu -- a small window that pops up and displays a series of choices.
    JPopupMenu.Separator
    A popup menu-specific separator.
    JProgressBar
    A component that visually displays the progress of some task.
    JRadioButton
    An implementation of a radio button -- an item that can be selected or deselected, and which displays its state to the user.
    JRadioButtonMenuItem
    An implementation of a radio button menu item.
    JRootPane
    A lightweight container used behind the scenes by JFrame, JDialog, JWindow, JApplet, and JInternalFrame.
    JScrollBar
    An implementation of a scrollbar.
    JScrollPane
    Provides a scrollable view of a lightweight component.
    JSeparator
    JSeparator provides a general purpose component for implementing divider lines - most commonly used as a divider between menu items that breaks them up into logical groupings.
    JSlider
    A component that lets the user graphically select a value by sliding a knob within a bounded interval.
    JSpinner
    A single line input field that lets the user select a number or an object value from an ordered sequence.
    JSpinner.DateEditor
    An editor for a JSpinner whose model is a SpinnerDateModel.
    JSpinner.DefaultEditor
    A simple base class for more specialized editors that displays a read-only view of the model's current value with a JFormattedTextField.
    JSpinner.ListEditor
    An editor for a JSpinner whose model is a SpinnerListModel.
    JSpinner.NumberEditor
    An editor for a JSpinner whose model is a SpinnerNumberModel.
    JSplitPane
    JSplitPane is used to divide two (and only two) Components.
    JTabbedPane
    A component that lets the user switch between a group of components by clicking on a tab with a given title and/or icon.
    JTable
    The JTable is used to display and edit regular two-dimensional tables of cells.
    JTable.DropLocation
    A subclass of TransferHandler.DropLocation representing a drop location for a JTable.
    JTextArea
    A JTextArea is a multi-line area that displays plain text.
    JTextField
    JTextField is a lightweight component that allows the editing of a single line of text.
    JTextPane
    A text component that can be marked up with attributes that are represented graphically.
    JToggleButton
    An implementation of a two-state button.
    JToggleButton.ToggleButtonModel
    The ToggleButton model
    JToolBar
    JToolBar provides a component that is useful for displaying commonly used Actions or controls.
    JToolBar.Separator
    A toolbar-specific separator.
    JToolTip
    Used to display a "Tip" for a Component.
    JTree
    JTree.DropLocation
    A subclass of TransferHandler.DropLocation representing a drop location for a JTree.
    JTree.DynamicUtilTreeNode
    DynamicUtilTreeNode can wrap vectors/hashtables/arrays/strings and create the appropriate children tree nodes as necessary.
    JTree.EmptySelectionModel
    EmptySelectionModel is a TreeSelectionModel that does not allow anything to be selected.
    JViewport
    The "viewport" or "porthole" through which you see the underlying information.
    JWindow
    A JWindow is a container that can be displayed anywhere on the user's desktop.
    KeyStroke
    A KeyStroke represents a key action on the keyboard, or equivalent input device.
    LayoutFocusTraversalPolicy
    A SortingFocusTraversalPolicy which sorts Components based on their size, position, and orientation.
    LayoutStyle
    LayoutStyle provides information about how to position components.
    LookAndFeel
    LookAndFeel, as the name implies, encapsulates a look and feel.
    MenuSelectionManager
    A MenuSelectionManager owns the selection in menu hierarchy.
    OverlayLayout
    A layout manager to arrange components over the top of each other.
    Popup
    Popups are used to display a Component to the user, typically on top of all the other Components in a particular containment hierarchy.
    PopupFactory
    PopupFactory, as the name implies, is used to obtain instances of Popups.
    ProgressMonitor
    A class to monitor the progress of some operation.
    ProgressMonitorInputStream
    Monitors the progress of reading from some InputStream.
    RepaintManager
    This class manages repaint requests, allowing the number of repaints to be minimized, for example by collapsing multiple requests into a single repaint for members of a component tree.
    RowFilter<M,I>
    RowFilter is used to filter out entries from the model so that they are not shown in the view.
    RowFilter.Entry<M,I>
    An Entry object is passed to instances of RowFilter, allowing the filter to get the value of the entry's data, and thus to determine whether the entry should be shown.
    RowSorter<M>
    RowSorter provides the basis for sorting and filtering.
    RowSorter.SortKey
    SortKey describes the sort order for a particular column.
    ScrollPaneLayout
    The layout manager used by JScrollPane.
    ScrollPaneLayout.UIResource
    The UI resource version of ScrollPaneLayout.
    SizeRequirements
    For the convenience of layout managers, calculates information about the size and position of components.
    SizeSequence
    A SizeSequence object efficiently maintains an ordered list of sizes and corresponding positions.
    SortingFocusTraversalPolicy
    A FocusTraversalPolicy that determines traversal order by sorting the Components of a focus traversal cycle based on a given Comparator.
    SpinnerDateModel
    A SpinnerModel for sequences of Dates.
    SpinnerListModel
    A simple implementation of SpinnerModel whose values are defined by an array or a List.
    SpinnerNumberModel
    A SpinnerModel for sequences of numbers.
    Spring
    An instance of the Spring class holds three properties that characterize its behavior: the minimum, preferred, and maximum values.
    SpringLayout
    A SpringLayout lays out the children of its associated container according to a set of constraints.
    SpringLayout.Constraints
    A Constraints object holds the constraints that govern the way a component's size and position change in a container controlled by a SpringLayout.
    SwingUtilities
    A collection of utility methods for Swing.
    SwingWorker<T,V>
    An abstract class to perform lengthy GUI-interaction tasks in a background thread.
    Timer
    Fires one or more ActionEvents at specified intervals.
    ToolTipManager
    Manages all the ToolTips in the system.
    TransferHandler
    This class is used to handle the transfer of a Transferable to and from Swing components.
    TransferHandler.DropLocation
    Represents a location where dropped data should be inserted.
    TransferHandler.TransferSupport
    This class encapsulates all relevant details of a clipboard or drag and drop transfer, and also allows for customizing aspects of the drag and drop experience.
    UIDefaults
    A table of defaults for Swing components.
    UIDefaults.LazyInputMap
    LazyInputMap will create a InputMap in its createValue method.
    UIDefaults.ProxyLazyValue
    This class provides an implementation of LazyValue which can be used to delay loading of the Class for the instance to be created.
    UIManager
    UIManager manages the current look and feel, the set of available look and feels, PropertyChangeListeners that are notified when the look and feel changes, look and feel defaults, and convenience methods for obtaining various default values.
    UIManager.LookAndFeelInfo
    Provides a little information about an installed LookAndFeel for the sake of configuring a menu or for initial application set up.
    ViewportLayout
    The default layout manager for JViewport.

      

  • Enum Summary 
    Enum Description
    DropMode
    Drop modes, used to determine the method by which a component tracks and indicates a drop location during drag and drop.
    GroupLayout.Alignment
    Enumeration of the possible ways ParallelGroup can align its children.
    JTable.PrintMode
    Printing modes, used in printing JTables.
    LayoutStyle.ComponentPlacement
    ComponentPlacement is an enumeration of the possible ways two components can be placed relative to each other.
    RowFilter.ComparisonType
    Enumeration of the possible comparison values supported by some of the default RowFilters.
    SortOrder
    SortOrder is an enumeration of the possible sort orderings.
    SwingWorker.StateValue
    Values for the state bound property.

      

  • Exception Summary 
    Exception Description
    UnsupportedLookAndFeelException
    An exception that indicates the requested look & feel management classes are not present on the user's system.

      

Package javax.swing Description

Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms. For a programmer's guide to using these components, see Creating a GUI with JFC/Swing, a trail in The Java Tutorial. For other resources, see Related Documentation.

Swing's Threading Policy

In general Swing is not thread safe. All Swing components and related classes, unless otherwise documented, must be accessed on the event dispatching thread.

Typical Swing applications do processing in response to an event generated from a user gesture. For example, clicking on a JButton notifies all ActionListeners added to the JButton. As all events generated from a user gesture are dispatched on the event dispatching thread, most developers are not impacted by the restriction.

Where the impact lies, however, is in constructing and showing a Swing application. Calls to an application's main method, or methods in Applet, are not invoked on the event dispatching thread. As such, care must be taken to transfer control to the event dispatching thread when constructing and showing an application or applet. The preferred way to transfer control and begin working with Swing is to use invokeLater. The invokeLater method schedules a Runnable to be processed on the event dispatching thread. The following two examples work equally well for transferring control and starting up a Swing application:

public class MyApp implements Runnable {
    public void run() {
        // Invoked on the event dispatching thread.
        // Construct and show GUI.
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new MyApp(args));
    }
}
Or:
public class MyApp {
    MyApp(String[] args) {
        // Invoked on the event dispatching thread. Do any initialization
        // here.
    }

    public void show() {
        // Show the UI.
    }

    public static void main(final String[] args) {
        // Schedule a job for the event-dispatching thread:
        // creating and showing this application's GUI.
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new MyApp(args).show();
            }
        });
    }
}
This restriction also applies to models attached to Swing components. For example, if a TableModel is attached to a JTable, the TableModel should only be modified on the event dispatching thread. If you modify the model on a separate thread you run the risk of exceptions and possible display corruption.

As all events are delivered on the event dispatching thread, care must be taken in event processing. In particular, a long running task, such as network io or computational intensive processing, executed on the event dispatching thread blocks the event dispatching thread from dispatching any other events. While the event dispatching thread is blocked the application is completely unresponsive to user input. Refer to SwingWorker for the preferred way to do such processing when working with Swing.

More information on this topic can be found in the Swing tutorial, in particular the section on How to Use Threads.

Related Documentation

For overviews, tutorials, examples, guides, and other documentation, please see:

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Document créé le 31/07/2006, dernière modification le 29/10/2018
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