Web Hosting Web Hosting, web hosting, JSP, Servlets, Tomcat, website hosting, web site hosting
Web Hosting, web hosting, JSP, Servlets, Tomcat, website hosting, web site hosting
Web Hosting, web hosting, JSP, Servlets, Tomcat, website hosting, web site hosting

Alden Hosting provides professional, efficient, and reliable business-class Web hosting services to small- and medium-sized businesses.

WWW.

Call Us Toll-Free
(877) 256-0328

Outside USA
1 - (201) 505-0430

Web Hosting Welcome Web Hosting Web Hosting Plans Overview , Fund Raising, Fundraising, web hosting, website hosting, web site hosting Web Hosting Fund Raising, Fundraising, web hosting Web Hosting Resellers, web Hosting Web Hosting Web Design, web Hosting Web Hosting Extra Services,  web Hosting Web Hosting Traffic Booster, web hosting Web Hosting Traffic Booster, web hosting Web Hosting Technical Support,  web Hosting Web Hosting webmaster tips,  web Hosting Web Hosting 30 Day Money Back, web hosting Web Hosting Legal Notices for Web Hosting Web Hosting Glossary Computer Terms for web Hosting Web Hosting Contact Information - web hosting

Site Map

  Web Hosting Web Hosting Sign-Up   Web Hosting Fund Raising, Fundraising, web hosting, website hosting, web site hosting    Web Hosting Resellers web hosting, website hosting, web site hosting   Web Hosting EZ Site Control Panel for web hosting,website hosting, web site hosting
Using a Server to Work Around Security Restrictions (The Java™ Tutorials > Deployment > Applets)
Trail: Deployment
Lesson: Applets
Section: Practical Considerations When Writing Applets
Subsection: Working with a Server-Side Application
Home Page > Deployment > Applets
Using a Server to Work Around Security Restrictions
As the What Applets Can and Can't Do section explains, applets are subject to many security restrictions. For example, they can't perform file I/O, they can't make network connections except to their original host, and they can't start programs.

One way of working around these restrictions is to use a server application that executes on the applet's host. The server won't be able to get around every applet restriction, but it can make more things possible. For example, a server probably can't save files on the host the applet's running on, but it'll be able to save files on the host the applet originated from.

This page features an example of a server that allows two applets to communicate with each other. The applets don't have to be running on the same page, in the same browser, or on the same computer. As long as the applets originate from the same computer, they can communicate through the server that's running on that originating computer. The example uses sockets, which are documented in All About Sockets.

Here are the source files:

TalkClientApplet.java
The source file for the client applet. After you compile it, you can run it by including it in an HTML page with this tag:
<APPLET CODE=TalkClientApplet.class WIDTH=550 HEIGHT=200>
</applet>

Here's a link to a page that includes the above HTML code. After saving this page to a file on your local HTTP server, you can use it to communicate with the talk server

TalkServer.java and TalkServerThread.java
The source files for the server applet. After compiling both files, you can run the server on the applets' originating host by invoking the interpreter on the TalkServer class.

The instructions for running the server are just like those for the previous example. Run the server on the applets' originating host, recording the port number the applets should rendezvous on. Then initialize both applets (which can be running on different machines) to talk to the server port number. After this initialization is complete, type a string into each applet's text field. Then press the Return key to send the message to the other applet.

Here's the server in action:

www% java TalkServer
TalkServer listening on rendezvous port: 36567
Here are pictures of the applets in action:

Sample talk output

Sample talk output

Previous page: A Simple Network Client Applet
Next page: Finishing an Applet
Web Hosting, web hosting, JSP, Servlets, Tomcat, website hosting, web site hosting
Add to My Yahoo!

XML icon

Add to Google

 

 

 

 

 

 

 

 

 

 

 

http://alden-servlet-Hosting.com
JSP at alden-servlet-Hosting.com
Servlets at alden-servlet-Hosting.com
Servlet at alden-servlet-Hosting.com
Tomcat at alden-servlet-Hosting.com
MySQL at alden-servlet-Hosting.com
Java at alden-servlet-Hosting.com
sFTP at alden-servlet-Hosting.com
http://alden-tomcat-Hosting.com
JSP at alden-tomcat-Hosting.com
Servlets at alden-tomcat-Hosting.com
Servlet at alden-tomcat-Hosting.com
Tomcat at alden-tomcat-Hosting.com
MySQL at alden-tomcat-Hosting.com
Java at alden-tomcat-Hosting.com
sFTP at alden-tomcat-Hosting.com
http://alden-sftp-Hosting.com
JSP at alden-sftp-Hosting.com
Servlets at alden-sftp-Hosting.com
Servlet at alden-sftp-Hosting.com
Tomcat at alden-sftp-Hosting.com
MySQL at alden-sftp-Hosting.com
Java at alden-sftp-Hosting.com
sFTP at alden-sftp-Hosting.com
http://alden-jsp-Hosting.com
JSP at alden-jsp-Hosting.com
Servlets at alden-jsp-Hosting.com
Servlet at alden-jsp-Hosting.com
Tomcat at alden-jsp-Hosting.com
MySQL at alden-jsp-Hosting.com
Java at alden-jsp-Hosting.com
sFTP at alden-jsp-Hosting.com
http://alden-java-Hosting.com
JSp at alden-java-Hosting.com
Servlets at alden-java-Hosting.com
Servlet at alden-java-Hosting.com
Tomcat at alden-java-Hosting.com
MySQL at alden-java-Hosting.com
Java at alden-java-Hosting.com
sFTP at alden-java-Hosting.com
JSP Servlets Tomcat mysql Java JSP Servlets Tomcat mysql Java JSP Servlets Tomcat mysql Java JSP Servlets Tomcat mysql Java JSP at JSP.aldenWEBhosting.com Servlets at servlets.aldenWEBhosting.com Tomcat at Tomcat.aldenWEBhosting.com mysql at mysql.aldenWEBhosting.com Java at Java.aldenWEBhosting.com Web Hosts Portal Web Links Web Links Web Hosting JSP Solutions Web Links JSP Solutions Web Hosting Servlets Solutions Web Links Servlets Solutions Web Hosting Web Links Web Links . .
.
.
. .
. . . . jsp hosting servlets hosting web hosting web sites designed cheap web hosting web site hosting myspace web hosting