The Spring Framework is an application framework and inversion of control container for the Java spring framework reference documentation 3.1 pdf. The Spring Framework is open source. The first version was written by Rod Johnson, who released the framework with the publication of his book Expert One-on-One J2EE Design and Development in October 2002. The framework was first released under the Apache 2.
0 license in June 2003. The first milestone release, 1.
0, was released in March 2004, with further milestone releases in September 2004 and March 2005. 0 was released in October 2006, Spring 2. 5 in November 2007, Spring 3. 0 in December 2009, Spring 3.