Barney Boisvert's blog starts off by discussing a potential spec around the implementation of closures in Java, though admittedly a fan of closures in other languages, he's not to impressed by the current proposals in this space. Read Barney Boisvert's complete post on closures: Additionally, in the Code to Joy blog there is another discussion around closures and their potential implications in the upcoming version of Java 7 Read 'Code to Joy's complete post on closures: