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Answer Posted / sunil kumar- vizag
Portlets are pluggable user interface components that are
managed and displayed in a web portal. Portlets produce
fragments of markup code that are aggregated into a portal
page. Typically, following the desktop metaphor, a portal
page is displayed as a collection of non-overlapping portlet
windows, where each portlet window displays a portlet. Hence
a portlet (or collection of portlets) resembles a web-based
application that is hosted in a portal. Some examples of
portlet applications are email, weather reports, discussion
forums, and news.
Portlet standards are intended to enable software developers
to create portlets that can be plugged in to any portal
supporting the standards.
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