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.

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Recent releases

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• 1.1

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•  02 Oct 2009 17:35
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• Major

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

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• 1.0.2

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•  04 Sep 2009 13:18
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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.

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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.)