Java On Rails

Java On Rails is a software framework that boasts high efficiency and small size. The framework is designed to be similar to Rails, with built-in annotations for automatic validation of form fields. Unlike other frameworks like Spring or Struts, using Java On Rails does not require extensive knowledge of these platforms. This framework is self-contained and does not depend on any external libraries other than the Apache Java commons library and common Java web containers like Tomcat or Jetty. You can verify this by browsing the source code at WEB-INF/lib for these jars.

Overall, Java On Rails is an excellent option for developers seeking a lightweight and straightforward way to develop web applications. Although it does not require Spring or Struts, you can still add Spring support to your web application. This framework provides ample freedom to developers who want to pursue their own approach to web development.