Java Virtal Machine.net

[ News ] rss

February 01, 2011

Mark Wielaard: New GPG key. Finally created a new GPG key using gnupg. The old one was a DSA/1024 bits one and 8 years old. The new one is a RSA/2048 bits one. I will use the new one in the future to sign any release tarballs I might create. pub 2048R/57816A6A 2011-01-29 Key f...

More »

February 01, 2011

Andrew Hughes: [SECURITY] IcedTea6 1.7.8, 1.8.5, 1.9.5 Released!. We are pleased to announce a new set of security releases, IcedTea6 1.7.8, IcedTea6 1.8.5 and IcedTea6 1.9.5. This update contains the following security updates: The IcedTea project provides a harness to build the source code from OpenJDK6 u...

More »

March/2024
SunMonTueWedThuFriSat
     12
3456789
10111213141516
17181920212223
242526272829 30
31      

[ Archives News
for 'Java Technology' ]

home > news > java technology > more on web sockets and html5 in glassfish

More on Web Sockets and HTML5 in Glassfish

 In my last blog entry, I described VideoSharing which is an application that uses Web sockets to remote UI events and enable participants to control HTML5 video players remotely. Today, I'd like to share with you a similar type of collaboration application, but this time one that uses other HTML5 features: namely, 2D canvases and client SQL databases. The name of this application is BoardMirror.  Rather than sharing a video object, like in VideoSharing, BoardMirror shares a canvas object and lets participants draw figures on it. For the sake of simplicity, only two figures can be drawn on a canvas: rectangles and circles. These figures are drawn in a random location inside the canvas and using a random color. Here is a screenshot of the application: The mirror or collaboration part of the application is the result of copying these figures in all the other canvases that are connected to the server. And, of course, we use Web sockets for this purpose. A Web socket is nothing more than a socket connection that can be established between a (modern) Web browser and a Web container. It provides a low-latency, bi-directional communication parallel to the HTTP channel. It is Ajax/Comet on steroids. In addition, the BoardMirror application has the ability to store your work of art in a local SQL database in the browser. This is done using one of the new APIs in HTML5. In fact, HTML5 has two options for storing data on the c...


Date: October, 14 2010
Url: http://www.java.net/blog/spericas/archive/2010/10/13/more-web-sockets-and-html5-glassfish


Others News

©2002-2019Java-Virtual-Machine.net fr | free web design software | Free Templates | bootstrap popup | wowslider.com