How to deploy portlets to Liferay?

Question

I have faced problems in trying to install new portlets to Liferay running on Glassfish domain. I figured out the flow very lately and want to share it with others also. So,

Answer 1

Below are not for Glassfish but common startup steps:

To install a portlet in lliferay portal

• first install liferay portal from below link http://www.liferay.com/en_GB/community/wiki//wiki/Main/Liferay+IDE+Getting+Started+Tutorial

this requires installation of
    liferay ide
    liferay portal bundled with tomcat
    add this tomcat as run server time and start it, it will start liferay portal 

• create a portlet application

• open liferay at localhost:8080 and goto Admin -> control panel

• goto Plugins Configuration

• goto Intall tab and give location of war file (some logging error might come at tomcat console, ignore it)

• again goto home page at localhost:8080 and click + button

• go at the bottom in the list and u will find ur portlet

• click add button present at the right side of it and ur portlet would be added to the page.

Modifying code of portel requires to uninstall and install again the portlet from war file. All existing added portlets would also be modified.