Monthly Archives: April 2016

ISideWith Quiz

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HotSpot Dynamic Attach Mechanism

http://openjdk.java.net/groups/hotspot/docs/Serviceability.html#battach HotSpot Dynamic Attach Mechanism This is a Sun extension that allows a tool to ‘attach’ to another process running Java code and launch a JVM TI agent or a java.lang.instrument agent in that process. This also allows the system … Continue reading

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Jmap

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Debugging java out of memory exception

First run the process that needs to be debugged Run jps to get PIDs of running java processes Once you have found the PID of process you need to debug, you can get heap statistics by running `jmap -histo:live <PID>` … Continue reading

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A list of all languages I have programmed in

Logo – played on BBC Micro in school BASIC (or rather GWBASIC) – my first programming language QBASIC – GWBASIC  and QBASIC are what got me interested in computers Pascal (or rather Turbo Pascal) – didn’t like having to declare … Continue reading

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