GroupDocs.Total for Java is a compilation of every Java API offered by GroupDocs. It includes GroupDocs.Viewer for Java (a powerful document viewer API that allows you to display over 50 document formats in your Java applications), GroupDocs.Annotation for Java (a flexible API that lets end users annotate Microsoft Office, PDF and other documents within your Java applications), GroupDocs.Conversion for Java (an advanced class API that allows you to convert between over 50 document formats from within your Java applications), GroupDocs.Comparison for Java (allow end users to quickly and easily find differences between two revisions of a document) and much more.