Java Applet 面试题与答案

问题 16. Can applets on different pages communicate with each other?

Use the getSize() method, which the Applet class inherits from the Component class in the Java.awt package. The getSize() method returns the size of the applet as a Dimension object, from which you extract separate width, height fields. The following code snippet explains this:

Dimension dim = getSize();
int appletwidth = dim.width();
int appletheight = dim.height();

问题 17. Which classes and interfaces does Applet class consist?

Applet class consists of a single class, the Applet class and three interfaces: AppletContext, AppletStub, and AudioClip.

问题 18. What is AppletStub Interface?

The applet stub interface provides the means by which an applet and the browser communicate. Your code will not typically implement this interface.

问题 19. What tags are mandatory when creating HTML to display an applet?

code, height, width.

问题 20. What are the Applets information methods?

The following are the Applet's information methods: getAppletInfo() method: Returns a string describing the applet, its author, copyright information, etc. getParameterInfo( ) method: Returns an array of string describing the applet's parameters.