Monitoring Class Loading and Garbage Collection
The Swing component set in J2SE includes a special class for creating a panel to be placed in a popup window. You can use this panel to display a message to the user and to get a response from the user. The
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The second area of the JOptionPane is the message area. This is typically used to display a text message
When a user selects a button it signals the end of usage for the JOptionPane. Default sets of button labels are available. (As is the case for icons, these too come from property settings, such as OptionPane.yesButtonText.) You can also provide your own button labels. You can display any number of buttons (including no buttons) with any set of labels. The predefined button label is localized for several languages: English (en), German (de), Spanish (es), French (fr), Italian (it), Japanese (ja), Korean (ko), Swedish (sv), and two varieties of Chinese (zh_CN / zh_TW).
The JOptionPane class contains seven constructors, each returns a component that you can place anywhere. However, more typically you would use a factory method that creates the component and automatically places it inside a JDialog or JInternalFrame. There are eight of these factory methods (two varieties of four methods) that JOptionPane provides:
show[Internal]MessageDialog
show[Internal]ConfirmDialog
show[Internal]InputDialog
show[Internal]OptionDialog
The Internal variety creates a JOptionPane and shows it in a JInternalFrame. The other variety creates a JOptionPane and shows it in a JDialog. This tip only discusses the dialog variety.
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