public class Popupextends ObjectPopups are used to display a Component to the user, typically on top of all the other Components in a particular containment hierarchy. Popups have a very small life cycle. Once you have obtained a Popup, and hidden it (invoked the hide method), you should no longer invoke any methods on it. This allows the PopupFactory to cache Popups for later use.The general contract is that if you need to change the size of the Component, or location of the Popup, you should obtain a new Popup.Popup does not descend from Component, rather implementations of Popup are responsible for creating and maintaining their own Components to render the requested Component to the user.You typically do not explicitly create an instance of Popup, instead obtain one from a PopupFactory.
Java
Topic: Swings
Explain Class Popup in java ?
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