WRITING APPLETS:
An applet is a Java program written in a special format to have a graphical user interface, which allows a user to interact with a program by keyboard and mouse, or by performing other familiar actions.
The basic structure of a Java applet:
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class AppletName extends Applet
{
}
THE IMPORT STATEMENTS:
import java.applet.Applet; provides the applet class.
import java.awt.*; provides button class, textbox class etc. it is collection of classes for drawing GUI items.
import java.awt.event.*; provides ActionEvent, ActionListener etc.
THE CLASS DEFINITION:
public class AppletName extends Applet
Here class inherited Applet class, because some methods are taken from the class Applet. By using import java.applet.Applet; statement, Applet class was imported.