Java beginner note (2): use of applet

What is applet?

Applet is a special Java program that cannot be run separately, need to be embedded in an HTML file, interpreting by browser or appletViewer

Execution .applet may be transferred through the network, and is automatically loaded and executed by the browser.

Unlike Applicaton, the Applet program must inherit the Java.applet.applet class from Java or javax.swing.japplet class

Public class myapplet extends java.applet.applet

or

Public class myapplet extends javax.swing.japplet

In fact, the JApplet class is also inheriting from the Applet class.

To browse the applet, you need to embed it in the web page, just insert the tag in the HTML file,

<

Applet [

Codebase =

Applet's URL path]

Code =

Applet class name

Width =

Applet's width

HEIGHT =

APPLET's height [

Alt =

Text for replacement when you cannot display Applets]

[

Name =

AppleT name]

[

Align =

Alignment]

[

VSpace =

Vertical direction blank distance]

[

HSPACE =

Level direction blank distance]

>

<

PARAM

Name = parameter name

Value = Parameter Value>

Applet>

* The content in brackets is optional. Example:

// Import the singular name

IMPORT JAVA.Applet.applet;

// Import the base class

Import java.awt.graphics;

// Import graphics

// Main program class

Public Class FirstApplet Extends Applet

{

Public void Paint (Graphics G)

{

// Display text g.drawstring in the coordinate (30, 30) position ("this is the first applet", 30, 30);

}

}

Compiled as FirstApplet.java to Firstapplet.class