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From David Gradwell <>
Subject Sudden erratic behaviour by Netbeans 12.0
Date Thu, 01 Oct 2020 09:30:41 GMT

After months of using NetBeans 12.0 it has started behaving erratically.


  1.  A long established and unchanged Maven project re-compiled and produced the expected
.jar but two source files were flagged as errored but no line in either file had an error
  2.  None of the other projects (at least a dozen !) that depend on the project in question
could see the project.

Clean and build doesn’t help.

Closing and re-opening the project doesn’t help.


  1.  How do I clear the NetBeans cache ?
  2.  Has anyone else seen anything like this ?


David Gradwell

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