Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

(a)
(b)
Figure 38.10
(a) A JOptionPane dialog can display an icon, a message, an input, and
option buttons. (b) The message dialog displays a message and waits for
the user to click OK.
For example, you can use the following method to create a message
dialog box,as shown in Figure 38.10(b):
JOptionPane.showMessageDialog(null, "SSN not found",
"For Your Information", JOptionPane.INFORMATION_MESSAGE);
38.6.1 Message Dialogs
A message dialog box displays a message that alerts
the user and waits for the user to click the OK button
to close the dialog. The methods for creating message
dialogs are:
public static void showMessageDialog(Component parentComponent,
Object message)
public static void showMessageDialog(Component parentComponent,
Object message,
String title,
int messageType)
public static void showMessageDialog(Component parentComponent,
Object message,
String title,
int messageType,
Icon icon)
The parentComponent can be any component or null. The message is
an object, but often a string is used. These two parameters must
always be specified. The title is a string displayed in the title
bar of the dialog with the default value "Message”.
The messageType is one of the following constants:
JOptionPane.ERROR_MESSAGE
JOptionPane.INFORMATION_MESSAGE
JOptionPane.PLAIN_MESSAGE
JOptionPane.WARNING_MESSAGE
JOptionPane.QUESTION_MESSAGE
By default, messageType is JOptionPane.INFORMATION_MESSAGE. Each
type has an associated icon except the PLAIN_MESSAGE type, as
shown in Figure 38.11. You can also supply your own icon in the
icon parameter.
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