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- Interview Questions and Answers for 'Java ui' - 5 question(s) found - Order By Newest

 Q1. What is the difference between AWT and Swing?
Admin
info@buggybread.com
Ans. Swing provides both additional components like JTable, JTree etc and added functionality to AWT-replacement components.

Swing components can change their appearance based on the current “look and feel” library that’s being used.

Swing components follow the MVC paradigm, and thus can provide a much more flexible UI.

Swing provides extras for components, such as icons on many components, decorative borders for components, tool tips for components etc.

Swing components are lightweight than AWT.

Swing provides built-in double buffering ,which means an off-screen buffer is used during drawing and then the resulting bits are copied onto the screen.

Swing provides paint debugging support for when you build your own component.

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   Like         Discuss         Correct / Improve     java   awt   java ui   swing   difference between swing and awt   architecture


 Q2. What is the order of method invocation in an applet?
Admin
info@buggybread.com
Ans. public void init()
public void start()
public void stop()
public void destroy()

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   Like         Discuss         Correct / Improve     java   java ui   applet   swing   awt


 Q3. What is an applet? What is the lifecycle of an applet?
Admin
info@buggybread.com
Ans. Applet is a dynamic and interactive program that runs inside a web page displayed by a java capable browser.

Lifecycle methods of Applet -

init( ) method - Can be called when an applet is first loaded
start( ) method - Can be called each time an applet is started
paint( ) method - Can be called when the applet is minimized or maximized
stop( ) method - Can be used when the browser moves off the applet's page
destroy( ) method - Can be called when the browser is finished with the applet

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   Like         Discuss         Correct / Improve     java   java ui   applet   swing   awt   lifecycle of applet   technologies


 Q4. What is meant by controls and what are different types of controls in AWT / SWT?
Admin
info@buggybread.com
Ans. Controls are components that allow a user to interact with your application and SWT / AWT supports the following types of controls:

Labels, Push Buttons, Check Boxes, Choice Lists, Lists, Scrollbars, Text Components.

These controls are subclasses of Component.

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   Like         Discuss         Correct / Improve     java   java ui   swt   awt   types of controls


 Q5. Develop a simple paint like program using applets ?
Ameera
amiratalzain94@gmail.com
Ans. Follow the below steps:

1- import the required class and packages.
2- create a class Drawtest for creating an applet.
3- initialize panles and controls int the init() method.
4- Define the destroy() method to destroy the same.
5- create an instance for draw test class and call the init(0 and start() methods in the main method)).
6- Add a new frame to the applet window and resize it to 300x300.
7- Declare a method get applet infor to display the applet information.
8- Declare two constants LINES , POINTS which are going to be the modes.
9- Define the paint method and perfoem the required operations.
10- Display the result according to the mode selected.

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   Like         Discuss         Correct / Improve     applets   java gui   java ui




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