Projects / CollectionSpy


CollectionSpy is a Java profiler that focuses on tracking and analyzing your program's usage of Collection Framework containers. It detects hashing container (e.g. HashMap) corruption due to mutating keys. It tracks expensive internal rehashing of containers whose capacity needs expanding. It detects multithreaded access to any unsynchronized container (e.g. HashMap, ArrayList). It visualizes hashing container bucket list lengths, allowing you to diagnose worst-case access performance.

Operating Systems

Recent releases

  •  02 Oct 2009 13:48

    Release Notes: This release supports profiling of applications running on the 1.5 JVM. It has increased profiling performance and improved launch configuration.

    •  04 Sep 2009 09:54

      Release Notes: Support for JDK 1.6.0_15 was added. Better ClassLoader support in Web apps was added. Better Launch Configuration and License Key dialog behavior was added. Miscellaneous minor bugs were fixed.

      Recent comments

      05 Aug 2009 19:42 sfatehi

      Unintuitive user interface for such an expensive product. Couldn't get my simple pojo jar to load. Unprofessional error messages, with no exception logs: "Stop tickling me..." (I am not tickling you - just trying to solve a business problem.)


      Project Spotlight


      A Fluent OpenStack client API for Java.


      Project Spotlight

      TurnKey TWiki Appliance

      A TWiki appliance that is easy to use and lightweight.