The Viewer Tag Library allows you to access the viewers through modular and reusable tags. Using tags allows you to reduce the amount of embedded Java code in a JSP page by moving the functional implementation into the tag and its implementing class. Doing so effectively abstracts the details of the code from the presentation of the actual page, allowing the web page author to concentrate on developing JSP pages. This allows all the functionality of the viewers to be accessed without knowing how to write Java code.
The Viewer Tag Library is made up of two primary tags, the viewer and partsViewer tags, and a nested tag called the report tag. The viewer and partsViewer tags support attributes that relate to the way the viewers appear and behave.
Using the Viewer Tag Library is equivalent to using the Viewer Java SDK to programmatically customize the report page viewer and report parts viewer. However, it saves time and consistently generates efficient code.
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