Prerequisite: Knowledge of Liferay portal and Vaadin framework. I am going to show how to integrate vaadin 7 in Liferay portal. A Vaadin portlet requires resources such as the server-side Vaadin libraries, a theme, and a widget set. By Default, Liferay portal comes with vaadin 6. For running portlet with vaadin 7, we need to install vaadin 7 in...
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