Confirmation dialog (sometimes called warning alert boxes)Java Look and Feel Design Guidelines, Alert Boxes
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dialog box The dialog box (also called dialogue box (non-U.S. English), message box or simply dialog) is a graphical control element in the form of a small window that communicates information to the user and prompts them for a response. Dialog boxes ar ...

that asks user to approve requested operation. Usually this dialog appears before a potentially dangerous operation is performed (program termination, file deletion, etc.) Typically confirmation dialog boxes have two

buttons A button is a fastener that joins two pieces of fabric together by slipping through a loop or by sliding through a buttonhole. In modern clothing and fashion design, buttons are commonly made of plastic but also may be made of metal, wood ...

(e.g. ''Yes'' / ''No'', ''Confirm'' / ''Cancel'') or three buttons (e. g. ''Save'' / ''Discard'' / ''Cancel''). Some human interface guidelines recommend avoiding unnecessary confirmation dialogs.

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and Sun

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mos ...

UI guidelines recommended a confirmation button be put before a cancellation button; but a default button should not be associated with a major destructive action.BlackBerry GUI guidelines

References

See also