Java Module java.desktop Package javax.swing.plaf.metal Class MetalMenuBarUI（JDK11）

Constructor Detail

• MetalMenuBarUI

  public MetalMenuBarUI()

Method Detail

• createUI

  public static ComponentUI createUI​(JComponent x)

  Creates the ComponentUI implementation for the passed in component.

  Parameters:

  x - JComponent to create the ComponentUI implementation for

  Returns:

  ComponentUI implementation for x

  Throws:

  NullPointerException - if x is null

• installUI

  public void installUI​(JComponent c)

  Configures the specified component appropriate for the metal look and feel.

  Overrides:

  installUI in class ComponentUI

  Parameters:

  c - the component where this UI delegate is being installed

  Throws:

  NullPointerException - if c is null.

  See Also:

  ComponentUI.uninstallUI(javax.swing.JComponent), JComponent.setUI(javax.swing.plaf.ComponentUI), JComponent.updateUI()

• uninstallUI

  public void uninstallUI​(JComponent c)

  Reverses configuration which was done on the specified component during installUI.

  Overrides:

  uninstallUI in class ComponentUI

  Parameters:

  c - the component where this UI delegate is being installed

  Throws:

  NullPointerException - if c is null.

  See Also:

  ComponentUI.installUI(javax.swing.JComponent), JComponent.updateUI()

• update

  public void update​(Graphics g,
                     JComponent c)

  If necessary paints the background of the component, then invokes paint.

  Overrides:

  update in class ComponentUI

  Parameters:

  g - Graphics to paint to

  c - JComponent painting on

  Throws:

  NullPointerException - if g or c is null

  Since:

  1.5

  See Also:

  ComponentUI.update(java.awt.Graphics, javax.swing.JComponent), ComponentUI.paint(java.awt.Graphics, javax.swing.JComponent)