Java and JSF howto blogs and code snippets

Rhinoslider sample.

Listing 1 below, is a sample generated page. Please make sure that items from 6 to 11 of the snippet are accessible from the page itself. These items are part of the plugin download. If using PrimeFaces, you may want to remove lines 6 to 8. Also lines 10 and 11 are optional and are controlled by the values of "easing" and "controlsMousewheel" parameters of the plugin (see Listing 7).

Some of the Facebook panels with slim scrollbars and infinite scrolling are those non full-page panels used to display notifications and messages. These are activated by button-icons in the upper left corner of your timeline. In this blog, we will demonstrate how to create similar panels using slimScroll jQuery plugin in PrimeFaces.

Please note that the first section of this blog (slimScroll panel without the infinite scrolling) also works for standard JSF projects.

Infinite scroll is a page feature where in data is automatically loaded as you scroll down to the bottom of a page. Facebook uses this feature in their "news feeds".

This demonstration uses PrimeFaces with a jQuery plugin called WayPoints.  Plugin download and documentation can be found here http://imakewebthings.com/jquery- waypoints/.  We employed PrimeFaces' <p:remoteCommand /> and <p:outputPanel /> along with Waypoints, the main component of the process.   It is Waypoints that initiates the update process that call <p:remoteCommand />, and in turn into the backing code, as soon as a Waypoint element appears at the bottom of the page/viewport.

The example that follows demonstrates how to validate an email address inputted from a PrimeFaces <p:inputText /> field.  It validates the correctness of the email address as well as its existence.  PrimeFaces version 3.4.1 was used to test this demonstration.

This blog is about using SSH tunnel in Java through jsch, a Java an implementation of SSH2.   As an example, we connect to an MySQL installation in a remote host behind a firewall which not accessible from the outside.   What an SSH tunnel does is forward accesses from a local port to a remote port on a remote host and transfer data in a secure manner.

First download jsch here http://www.jcraft.com/ and add it to your project.    The only requirements are,   you have to have an SSH account on the remote host,  and for the database example,    a database account with a "connect" permission.

PrimePush comes bundled with PrimeFaces.  It uses Atmosphere,  a WebSocket/Comet framework for asynchronous server-browser communications.   Atmosphere however does not come with PrimeFaces out of the box.   You need add to your project the necessary Atmosphere runtime libraries.   In this blog  we will show you how to get going with PrimePush in PrimeFaces 3.4.1 for use with Tomcat 7 (tested with Tomcat 7.0.27).

This blog is based on our simple URL rewrite implementation for our existing JSF/PrimeFaces pages. As a demonstration, suppose you have an existing page with following URL pattern.