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Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

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NP_UNWRITTEN_FIELD

NP: Read of unwritten field (NP_UNWRITTEN_FIELD)
 The program is dereferencing a field that does not seem to ever have a non-null value written to it.
Unless the field is initialized via some mechanism not seen by the analysis,
dereferencing this value will generate a null pointer exception.