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It's useful to have JMeter Eclipse project in hand, since you need to do debugging and possible bug fixing of in JMeter itself.

1. Check out JMeter trunk from Subversion
   • Get Subclipse plug-in for Eclipse http://subclipse.tigris.org/
   • Check out http://svn.apache.org/repos/asf/jakarta/jmeter/trunk as jmeter-trunk Java project
     

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Setting up plug-in project

This Eclipse project will build your custom components and launch JMeter so that it with a configuration which will find them classes propeply.

1. Set up your custom plug-in project
   • Create a new Java project
   • Add jmeter-trunk to project dependencies
   • Create bin/ and src/ folders
   • Create jmeter.properties in the bin/
     • This defines where JMeter internal class loader looks for classes
     • It should look like this
       

# JMeter uses case sensitive string matching to test these paths against absolute class path.
# This is very bad since paths must be *exactly* here as they appear in Java classpath.
# Hopefully this will be fixed in the future versions. Note Windows needs to escape \ character as \\.

# Add JMeter output folder and our plug-in output folder to paths from which 
# plug-ins are searched
search_paths=C:\\xxx\\jmeter-trunk\\bin;.
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