how to build a simple and native PDF viewer in java

I am trying to build a simple PDF viewer which will be able to read the texts and probably some images of a PDF file. Is there any good API in JAVA to do the job or if we don't use the API what could be the best way to get started .

Please understand that I am not trying to use ADOBE ACROBAT or run any other application from inside my program. I want to build a native pdf viewer in java .

[405 byte] By [palhelloa] at [2007-10-2 5:13:27]