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DISCLAIMER OF WARRANTIES:

     The following [enclosed] code is sample code created by IBM Corporation.
     This sample code is provided to you solely for the purpose of assisting
     you in the development of your applications.
     The code is provided "AS IS", without warranty of any kind. IBM shall
     not be liable for any damages arising out of your use of the sample code,
     even if they have been advised of the possibility of such damages.
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The following samples are described in the WebSphere Portal V5.1 Information Center.

ibmHelloWorld.war - HelloWorld portlet (IBM)
ibmHelloJSP.war   - HelloJSP portlet (IBM)
ibmHelloUser.war  - Hello User (IBM)
ibmViewWorld.war  - IbmViewWorld portlet

Look under the topics, Developing portlets, Portlet development basics