6 Applet Programming in Java

8/10/2019 6 Applet Programming in Java

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Applets are small applications which are

transported over the internet server, install

themselves automatically without anymanual assistance and run as a part of web

document. They can be transported over the

internet from one computer to another andrun using the applet viewer or any web

browser that supports java.


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Local Applets - An applet developed locally

and stored in a local system is known as local

applet, it doesnt require any internet

connections.

Remote Applets - A remote applet is that

which is developed by someone else and stored

on a remote computer connected to the

internet, which we can download the applet

onto our system via the internet and run it.


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Born or Initialization state.

Running state.

Idle state.

Dead or Destroyed state.


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BORN

RUNNING IDLE

DEAD END

Begin

Display

Initialization

Stopped

Destroyed

destroy()

start()

start()

paint()


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Applets.Applets are small programs.Applet dont have the main

method.

Applets can run in browsers

window or in Applet viewer.(To

run the applet in an Applet

viewer will be an advantage

for debugging)

Applets are designed for the

client site programming

purpose.

Application

Applications are larger

programs.

Application execution

starts with the main method.

Application can run in

browserswindow.

.Application dont havesuch type of criteria.


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Draw pictures on a web page.

Create a new window and draw in it.

Play sounds. Receive input from the user through the

keyboard or the mouse.

Make a network connection to the serverfrom which it came and can send and receive

data from that server.


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Applets are cross platform and can run onWindows, MacOS and Linux platform.

Applets can work all the version of java plug-in.

Applets runs in a sandbox, so the user does notneed ton trust the code, so it can work withoutsecurity approval.

Applets are supported by most web browsers..

Applets are cached in most web browsers, so willbe quick to load when returning to a web page.


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Java plug-in is required to run applet.

Java applet requires JVM(Java VirtualMachine),so first time it takes significant startup

time. If java applet is not already cached in the

machine, it will be downloaded from internet andwill take time.

Its difficult to design and build good userinterface in applets compared to HTMLtechnology.


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Java applets runs on the java and enables web

browsers such as Mozilla, Netscape Navigator

and Internet Explorer. Applets are ideal for the

web because they leverage browser features,

which decreases file size, increases download

speed and simplify the programming.

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6 Applet Programming in Java