Why do I get a Java exception error when trying to launch the results of a Polyspace Bug Finder project?
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MathWorks Support Team
il 21 Giu 2019
Modificato: MathWorks Support Team
il 26 Mar 2025
I'm using MATLAB R2019a and following the MathWorks example on using the Polyspace Bug Finder results class by using the following command in the MATLAB command window:
>> web(fullfile(docroot, 'bugfinder/ref/polyspace.bugfinderresults-class.html'))
I receive a Java Exception error at the line "bfSummary = proj.Results.getResults('readable');":
----------------------------------------------------------------------------------------------------------
Error using PolySpaceResult/Initialise
Java exception occurred:
java.lang.NoClassDefFoundError:
com/polyspace/mwsqlite4java/SQLiteException
at
com.polyspace.util.RTEFileParser.getGlobalInformationFromDB(RTEFileParser.java:188)
at
com.polyspace.util.RTEFileParser.parseRTEFile(RTEFileParser.java:133)
at
com.polyspace.util.RTEFileParser.<init>(RTEFileParser.java:52)
at
com.polyspace.util.ReportInterface.ReportInterface.setResultsFolder(ReportInterface.java:284)
at
com.polyspace.util.ReportInterface.ReportInterface.<init>(ReportInterface.java:134)
Caused by:
java.lang.ClassNotFoundException:
com.polyspace.mwsqlite4java.SQLiteException
-------------------------------------------------------------------------------------------------------------
Why do I observe this error, and how do I fix it?
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MathWorks Support Team
il 26 Mar 2025
Modificato: MathWorks Support Team
il 26 Mar 2025
There are two cases where such an error can occur:
1) MATLAB was not restarted after calling "polyspacesetup"
OR
2) MATLAB release was updated to a new update version and Polyspace was not setup again
To fix this, follow the steps mentioned below:
1) In the MATLAB command window, enter:
>> polyspacesetup('uninstall')
>> polyspacesetup('install')
2) After the commands are executed, restart MATLAB.
3) To verify, run the command "javaclasspath" in MATLAB Command Window and make sure that you have mwsqlite4java.jar listed in the STATIC java path. If this is listed, then there should not be any java exception.
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