Monday, August 6, 2012

IDE errors with Maven projects after upgrading to NetBeans 7.2

A recent upgrade of NetBeans from version 7.1 to 7.2 seemed to cause problems with Maven multi-module projects. Normally, a newly created class in one Maven project module will be instantly visible to other modules open in the IDE, at least for editing purposes. But after the upgrade I started to see "cannot find symbol" errors in the IDE for such new classes. Despite this, a full build of the project would succeed.

Googling for an answer drew a blank. The usual kludge fixes such as deleting the NetBeans cache (for NetBeans 7.2 on OSX this seems to have moved from ~/.netbeans to ~/Library/Application Support/Netbeans) and re-indexing my local repo didn't make any difference. Despair loomed.

Happily, I stumbled across the cause of the problem after only a moderate amount of pulling of hair and gnashing of teeth. My Maven settings.xml file included this section...


After editing the path to point to the IDE errors disappeared.

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