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Applets
An applet is a special type of program embedded in a webpage to generate dynamic content. It runs inside the browser at the client side. Advantages of applets include less response time since they run on the client side and can run on multiple platforms. The lifecycle of a Java applet includes initialization, start, paint, stop, and destruction. The Applet class provides lifecycle methods like init(), start(), stop(), and destroy(). To create an applet, the Applet class must be extended and its lifecycle methods can be overridden.
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Applets
- 1. - Arulkumar V AssistantProfessor, SECE Java - Applet Basics
- 2. Applet 12/19/20172 Applet isa special type of program that is embedded in the webpage to generate the dynamic content. It runs inside the browser and works at client side.
- 3. 12/19/20173 Advantage of Applet There are many advantages of applet. They are as follows: It works at client side so less response time. Secured It can be executed by browsers running under many plateforms, including Linux, Windows, Mac Os etc.
- 4. Lifecycle of JavaApplet 12/19/20174 Applet is initialized. Applet is started. Applet is painted. Applet is stopped. Applet is destroyed
- 5. java.applet.Applet class 12/19/20175 Forcreating any applet java.applet.Applet class must be inherited. It provides 4 life cycle methods of applet. public void init(): is used to initialized the Applet. It is invoked only once. public void start(): is invoked after the init() method or browser is maximized. It is used to start the Applet. public void stop(): is used to stop the Applet. It is invoked when Applet is stop or browser is minimized. public void destroy(): is used to destroy the Applet. It is invoked only once.
- 6. Ex 12/19/20176 //First.java import java.applet.Applet; import java.awt.Graphics; publicclass First extends Applet{ public void paint(Graphics g){ g.drawString("welcome",150,150); } }
- 7. Html Code -To run in Browser 12/19/20177 myapplet.html <html> <body> <applet code="First.class" width="300" height="300"> </applet> </body> </html>
- 8. 12/19/20178 /* <applet code="First.class"width="300" height="300"> </applet> */ //First.java import java.applet.Applet; import java.awt.Graphics; public class First extends Applet{ public void paint(Graphics g){ g.drawString("welcome to applet",150,150); } } C:>javac First.java c:>appletviewer First.java
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