The DocuSign Java library by DocuSign offers a Java REST API that consumes RESTful services related to electronic signature. The access to work with Java has the potential to automate signatures for contracts and documents. At the same time this project provides lines of code, it also displays a redirecting link to study demo services from the official site at http://iodocs.docusign.com/
Today at its latest Campfire One event, Google announced major updates to Google App Engine, their scalable cloud computing platform for web applications. App Engine developers will soon be able to create web-scale applications using standard Java APIs, and will be able to create AJAX components using Google's Web Toolkit. Other major features include cron support for scheduling tasks, tools for securely accessing and importing data, and a new Google development plugin for the Eclipse IDE.