34 Applet to Servlet Communication Java Web Application | Adv Java Servlet Programming Tutorial

In html form page to servlet communication the browser window automatically generates query string representing form data & sends that request to server automatically when the submit button is clicked/pressed.

- In applet to servlet communication all these activities should be performed by programmer manually in applet program in order to send request to server having query string.

- when perfomance is important then go for html form page to servlet communicaiton.

# Example Application on Applet to Servlet Communication:
========================================================
Diag:

- A frame is logical partition of web page. To create frames we can use frameset, frame tag.

- Frames are very useful to display response in the same web page from which request is generated. This work can also be done by using Ajax (Asynchronous JavaScript & XML).

Note- There is no need of configuring applet program in web.xml file because we need not to make any server side container recognizing applets.

So "AppletContext" object is a bridge between applet program & browser window.

- If applet program wants to pass any data to browser window then it uses "AppletContext" object. AppletContext object keeps track of the current executing environment(i.e. browser window or appletviewer) of applet program.

- Applet object means it is the object of a class that implement java.applet.AppletContext interface.

Deployment Directory Structure:

AppletToServletApp
-----------------
|---------page.html , Main.html
|---------MyApplet.java
|---------MyApplet.class
|---------WEB-INF
|---------web.xml
|---------classes
|---------WishServ.java
|---------WishServ.class

A frame with name is called as named frame.

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