JavaSpaces

• Blitz project
  
• JavaSpaces link collection of the JavaSpaces Blitz project
  
• Commercial JavaSpaces implementation: GigaSpaces

MapReduce

• Article on TheServerSide: MapReduce I
• Article on TheServerSide: MapReduce II

Swarm Computing

• Swarm: A true distributed programming language

JSF

• Homepage of Sun's JSF Reference Implementation (RI) Mojarra
  
• JSF Developer Forums
  
• Getting around JSF: The role of JSP
• Improving JSF by Dumping JSP - very well written article that explains the problems of interaction between JSP and JSF
  

Facelets

• Facelets Docbook
• Getting started with JSF, Facelets, Eclipse WTP and Tomcat
  
• Facelets fits JSF like a glove
• JSF/Facelets/Hibernate - web application tutorial
• Advanced Facelets programming
• Use Facelets with Tomahawk
• Various JSF related issues
• Facelets Tag Completion in Eclipse
• Inside Facelets Part 1: An Introduction
• Inside Facelets Part 2: Using Facelets
• Facelet Templating
  
• Creating composite controls with JSF and facelets
• Building Facelet Composition Components
  
• Developing applications with Facelets, JSF, and JSP
  

"When a function refers to a variable defined outside it, it's called a free variable. A function that refers to a free lexical variable is called a closure. (...) The name "closure" is a left over from earlier Lisp dialects. It derives from the way closures have to be implemented under dynamic scope." Paul Graham, ANSI Common Lisp, Prentice Hall, 1996, p.107.

"A closure is a combination of a function and an environment." Paul Graham, ANSI Common Lisp, Prentice Hall, 1996, p.108.

| block n |

n := 10. "free variable"
block := [ :x | x + n ]. "function with an environment represented by the free variable defined outside its scope"
block value: 2. "prints 12"

n := 12.
block value: 2. "prints 14"

• From Neal Gafter's blog: What's the point of Closures?
• From Neal Gafter's blog: Use cases for closures
  
• Presentation by Neil Gafter on YouTube: Advanced Topics In Programming Languages: Closures For Java
• Sun's historic "justification" why Java doesn't need closures: About Microsoft's "Delegates"

Smalltalk

Java Performance Tuning

• Java Performance Tuning
• Java Code Ranch Performance Optimization Forum
• Java Enterprise Performance FAQ