javax.swing
Class JPanel
- public class JPanel
- extends javax.swing.JComponent
- implements javax.accessibility.Accessible
JPanel
is a generic lightweight container. For examples and task-oriented documentation for JPanel, see How to Use Panels, a section in The Java Tutorial. Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeansTM has been added to the java.beans
package. Please see java.beans.XMLEncoder.
- Version:
- 1.46 12/19/03
- Author:
- Arnaud Weber
- Steve Wilson
uiClassID
private static final java.lang.String uiClassID
- See Also:
- #getUIClassID
- #readObject
JPanel
public JPanel(java.awt.LayoutManager layout,
boolean isDoubleBuffered)
- Creates a new JPanel with the specified layout manager and buffering strategy.
- Parameters:
layout
- the LayoutManager to use
isDoubleBuffered
- a boolean, true for double-buffering, which uses additional memory space to achieve fast, flicker-free updates
JPanel
public JPanel(java.awt.LayoutManager layout)
- Create a new buffered JPanel with the specified layout manager
- Parameters:
layout
- the LayoutManager to use
JPanel
public JPanel(boolean isDoubleBuffered)
- Creates a new
JPanel
with FlowLayout
and the specified buffering strategy. If isDoubleBuffered
is true, the JPanel
will use a double buffer.
- Parameters:
isDoubleBuffered
- a boolean, true for double-buffering, which uses additional memory space to achieve fast, flicker-free updates
JPanel
public JPanel()
- Creates a new
JPanel
with a double buffer and a flow layout.
updateUI
public void updateUI()
- Resets the UI property with a value from the current look and feel.
- See Also:
- JComponent#updateUI
getUI
public javax.swing.plaf.PanelUI getUI()
- Returns the look and feel (L&F) object that renders this component.
- Returns:
- the PanelUI object that renders this component
- Since:
- 1.4
setUI
public void setUI(javax.swing.plaf.PanelUI ui)
- Sets the look and feel (L&F) object that renders this component.
- Parameters:
ui
- the PanelUI L&F object
- Since:
- 1.4
- See Also:
- UIDefaults#getUI
getUIClassID
public java.lang.String getUIClassID()
- Returns a string that specifies the name of the L&F class that renders this component.
- Returns:
- "PanelUI"
- See Also:
- JComponent#getUIClassID
- UIDefaults#getUI
writeObject
private void writeObject(java.io.ObjectOutputStream s)
- See readObject() and writeObject() in JComponent for more information about serialization in Swing.
paramString
protected java.lang.String paramString()
- Returns a string representation of this JPanel. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be
null
.
- Returns:
- a string representation of this JPanel.
getAccessibleContext
public javax.accessibility.AccessibleContext getAccessibleContext()
- Gets the AccessibleContext associated with this JPanel. For JPanels, the AccessibleContext takes the form of an AccessibleJPanel. A new AccessibleJPanel instance is created if necessary.
- Returns:
- an AccessibleJPanel that serves as the AccessibleContext of this JPanel