Garbage collection forms a big part of languages like Java that support memory management. This post by Jeremy Manson discusses the new garbage collector that will form part of JDK 7, and which is already available in the latest OpenJDK drop. Read Jeremy's post 'G1 Garbage Collector in Latest OpenJDK Drop ': http://jeremymanson.blogspot.com/2008/11/g1-garbage-collector-in-latest-openjdk.html