• JSF 2.2 (2013-04-16) — JSF 2.2 introduced new concepts like stateless views, page flow and the ability to create portable resource contracts.
• JSF 2.1 (2010-10-22) — Maintenance release of 2.0. Only very minor amount of spec changes.
• JSF 2.0 (2009-06-28) — Major release for ease of use, enhanced functionality, and performance. Coincides with Java EE 6.
• JSF 1.2 (2006-05-11) — 核心系统和API改进. Coincides with Java EE 5. Initial adoption into Java EE.
• JSF 1.1 (2004-05-27) — 错误修复,没有更改规范.
• JSF 1.0 (2004-03-11) — 初始规范发布.

JavaServer Faces (JSF) is a Java specification for building component-based user interfaces for web applications. It was formalized as a standard through the Java Community Process and is part of the Java Platform, Enterprise Edition.

JSF 2 uses Facelets as its default templating system. Other view technologies such as XUL or plain Java can also be employed. In contrast, JSF 1.x uses JavaServer Pages (JSP) as its default templating system.