ICEpdf is bundled with a PDF viewer reference implementation. If you downloaded the binary distribution of ICEpdf, the viewer application is available as prebuilt JAR file found in [install_dir]/icepdf/lib/icepdf-viewer.jar.
If you have downloaded the source code distribution of ICEpdf, it is necessary to build the ICEpdf core and viewer source code using the provided build scripts. The Ant help command can be used to see a list of available build targets. To build the ICEpdf core and viewer JARs simply execute the command ant in the [install_dir]/icepdf/ directory.
This command will build and copy the icepdf-core.jar and icepdf-viewer.jar to the [install_dir]/icepdf/lib/ directory.