## Uses of Class
javax.swing.JOptionPane

Packages that use JOptionPane
javax.swing.plaf: Provides one interface and many abstract classes that Swing uses to provide its pluggable look-and-feel capabilities.
javax.swing.plaf.basic: Provides user interface objects built according to the Basic look and feel.
javax.swing.plaf.multi: Provides user interface objects that combine two or more look and feels.

### Uses of JOptionPane in javax.swing.plaf

Methods in javax.swing.plaf with parameters of type JOptionPane
`abstract boolean` OptionPaneUI.`containsCustomComponents(JOptionPane op)` Returns true if the user has supplied instances of Component for either the options or message.
`abstract void` OptionPaneUI.`selectInitialValue(JOptionPane op)` Requests the component representing the default value to have focus.

### Uses of JOptionPane in javax.swing.plaf.basic

Fields in javax.swing.plaf.basic declared as JOptionPane
`protected JOptionPane` BasicOptionPaneUI.`optionPane` `JOptionPane` that the receiver is providing the look and feel for.

Methods in javax.swing.plaf.basic with parameters of type JOptionPane
`boolean` BasicOptionPaneUI.`containsCustomComponents(JOptionPane op)` Returns true if in the last call to validateComponent the message or buttons contained a subclass of Component.
`void` BasicOptionPaneUI.`selectInitialValue(JOptionPane op)` If inputComponent is non-null, the focus is requested on that, otherwise request focus on the default value

### Uses of JOptionPane in javax.swing.plaf.multi

Methods in javax.swing.plaf.multi with parameters of type JOptionPane
`boolean` MultiOptionPaneUI.`containsCustomComponents(JOptionPane a)` Invokes the `containsCustomComponents` method on each UI handled by this object.
`void` MultiOptionPaneUI.`selectInitialValue(JOptionPane a)` Invokes the `selectInitialValue` method on each UI handled by this object.