Through this book developers will learn to create their own applications using the Liferay tools. They will learn to work with the JSR-286 portlets and Extension environment, thereby building larger applications and reusing portlets in different scenarios. Users will also learn to build Struts portlets with permissions and a set of actions. By using CMS and WCM users can aggregate and manage all content in one central place. They will learn to share web sites, pages, and portlets with friends, and will also set-up control panel and inter-portlet communication.