Applets
Java’s awt
provides classes and behavior for creating graphical user interface (GUI) –
based applets and applications; drawing to the screen; creating windows, menu
bars, buttons, check boxes, and other GUI elements. The awt classes are part of
the java.awt package.
To create
applet you create a subclass of the class Applet class, part of the java.applet
package, provide much of the behavior the initial applet class always has a
signature like this
public class
myclass extends java.applet
.Applet
{
----------
}
Five most
important methods in an applet’s execution:-
1.Initialization, 2.Starting,
3.Stopping,
4.Destroying
5.Painting
INITILIZATION
The
initialization of an applet might include reading and parsing any parameters to
the applet, creating any helper objects it needs, setting up an initial state
or loading images or fonts.
public void
init ()
{
---------
}
STARTING
After an
applet initialized, it is started.
public void start
()
{
-------
}
STOPPING
public void
stop ()
{
---------
}
DESTROYING
Destroying
enables the applet to clean up after itself just before it is freed or the
browser exits.
public void
destroy()
{
-------
}
Painting is
how an applet actually draws something on the screen, be it text, a line, a
colored background, or an image.
public void pain (Graphics g)
{
-------
}
needed [import java.awt.Graphics];
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