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Swing Interview Questions And Answers
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Questions 16 What is the difference between a MenuItem and a CheckboxMenuItem?
Answer
The CheckboxMenuItem class extends the MenuItem class to support a menu item that may be checked or unchecked.
Questions 17 What is the purpose of the enableEvents() method?
Answer
The enableEvents() method is used to enable an event for a particular object. Normally, an event is enabled when a listener is added to an object for a particular event. The enableEvents() method is used by objects that handle events by overriding their event-dispatch methods.
Questions 18 What is the difference between a Canvas and a Scroll Pane?
Answer
Many diff are there :
> Canvas is a component. ScrollPane is a container. > Canvas is a rectangular area where the application can draw or trap input events. ScrollPane implements horizontal and vertical scrolling.
Questions 19 What is a convertor?
Answer
Converter is bassically an application that converts distance measurements between metric and U.S units.
Questions 20 What is the difference between JFC & WFC?
Answer
JFC supports robust and portable user interfaces. The Swing classes are robust, compatible with AWT, and provide you with a great deal of control over a user interface. Since source code is available, it is relatively easy to extend the JFC to do exactly what you need it to do. But the number of third-party controls written for Swing is still relatively small.
WFC runs only on the Windows (32-bit) user interface, and uses Microsoft extensions to Java for event handling and ActiveX integration. Because ActiveX components are available to WFC programs, there are theoretically more controls available for WFC than for JFC. In practice, however, most ActiveX vendors do not actively support WFC, so the number of controls available for WFC is probably smaller than for JFC. The WFC programming model is closely aligned with the Windows platform.
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Swing Objective Questions And Answers
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