Setup development environment
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Install the latest Eclipse IDE for Java Developers (http://www.eclipse.org/downloads/)
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Fork PMD (https://github.com/pmd/pmd)
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Connect your eclipse with the master branch of your PMD repo
Step 4 and 5 are the easiest way to get the project location. You can skip theses steps if you got already got the location, Usually it's /Users/usr/git/pmd. -
Import the project as general project
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Delete the project, uncheck the Delete project contents on disk and copy the project location.
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Import them as existing Maven Projects and auto-resolve problems
