Java Swing Questions et reponses d'entretien
Question 16. Which method of the Component class is used to set the position and size of a component?
setBounds Method of the Component class is used to set the position and size of a component.
Question 17. What is the What is the difference between invokeAndWait() and invokeLater()?
invokeAndWait() method in swing is synchronous. It blocks until Runnable task is complete. InvokeLater() method in swing is asynchronous. It posts an action event to the event queue and returns immediately. It will not wait for the task to complete.
Question 18. Why should any swing call back implementation execute quickly?
Callbacks are invoked by the event dispatch thread. Event dispatch thread blocks processing of other events as long as call back method executes.
Question 19. What is an applet?
Applet is a java program that runs inside a web browser.
Question 20. What is the difference between applications and applets?
Application must be run explicitly within Java Virtual Machine whereas applet loads and runs itself automatically in a java-enabled browser. Application starts execution with its main method whereas applet starts execution with its init method. Application can run with or without graphical user interface whereas applet must run within a graphical user interface. In order to run an applet we need a java enabled web browser or an appletviewer.
Les plus utiles selon les utilisateurs :
- Why does it take so much time to access an Applet having Swing Components the first time?
- What's Java Swing?
- What are the differences between Swing and AWT?
- What is JFC?
- What is AWT?