Import issues

This is my setup:
Product Version: Apache NetBeans IDE 11.2 
Java: 13.0.1; Java HotSpot(TM) 64-Bit Server VM 13.0.1+9 
Runtime: Java(TM) SE Runtime Environment 13.0.1+9 
System: Windows 10 version 10.0 running on amd64; Cp1252; en_US (nb) 
User directory: C:\Users\dbraw\AppData\Roaming\NetBeans\11.2 
Cache directory: C:\Users\dbraw\AppData\Local\NetBeans\Cache\11.2 
 
I have added ooxml-xml-schemas-1.4.jar to my classpath to utilize more
advanced spreadsheet functions like setting pivotable datafield number
formats.
 
When I try to run my file I get the following exception:
 
Traceback (most recent call last):
  File
"C:\Users\dbraw\Documents\NetBeansProjects\TestJython\src\createPivotTable.p
y", line 10, in <module>
    from org.openxmlformats.schemas.spreadsheetml.x2006.main import *
java.lang.NoClassDefFoundError:
org/openxmlformats/schemas/spreadsheetml/x2006/main/CTExtensionList
              at java.lang.Class.getDeclaredMethods0(Native Method)
              at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
              at java.lang.Class.privateGetPublicMethods(Unknown Source)
              at java.lang.Class.getMethods(Unknown Source)
              at org.python.core.PyJavaType.init(PyJavaType.java:273)
              at org.python.core.PyType.createType(PyType.java:1264)
              at org.python.core.PyType.addFromClass(PyType.java:1201)
              at org.python.core.PyType.fromClass(PyType.java:1291)
              at
org.python.core.adapter.ClassicPyObjectAdapter$6.adapt(ClassicPyObjectAdapte
r.java:76)
              at
org.python.core.adapter.ExtensiblePyObjectAdapter.adapt(ExtensiblePyObjectAd
apter.java:44)
              at
org.python.core.adapter.ClassicPyObjectAdapter.adapt(ClassicPyObjectAdapter.
java:120)
              at org.python.core.Py.java2py(Py.java:1549)
              at
org.python.core.PyJavaPackage.addClass(PyJavaPackage.java:89)
              at
org.python.core.packagecache.PackageManager.basicDoDir(PackageManager.java:1
07)
              at
org.python.core.packagecache.SysPackageManager.doDir(SysPackageManager.java:
138)
              at
org.python.core.PyJavaPackage.fillDir(PyJavaPackage.java:123)
              at org.python.core.imp.importAll(imp.java:1012)
              at org.python.core.imp.importAll(imp.java:1000)
              at
org.python.pycode._pyx0.f$0(C:\Users\dbraw\Documents\NetBeansProjects\TestJy
thon\src\createPivotTable.py:91)
              at
org.python.pycode._pyx0.call_function(C:\Users\dbraw\Documents\NetBeansProje
cts\TestJython\src\createPivotTable.py)
              at org.python.core.PyTableCode.call(PyTableCode.java:165)
              at org.python.core.PyCode.call(PyCode.java:18)
              at org.python.core.Py.runCode(Py.java:1261)
              at
org.python.util.PythonInterpreter.execfile(PythonInterpreter.java:235)
              at org.python.util.jython.run(jython.java:247)
              at org.python.util.jython.main(jython.java:129)
Caused by: java.lang.ClassNotFoundException:
org.openxmlformats.schemas.spreadsheetml.x2006.main.CTExtensionList
              at java.net.URLClassLoader.findClass(Unknown Source)
              at java.lang.ClassLoader.loadClass(Unknown Source)
              at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
              at java.lang.ClassLoader.loadClass(Unknown Source)
              ... 26 more
java.lang.NoClassDefFoundError: java.lang.NoClassDefFoundError:
org/openxmlformats/schemas/spreadsheetml/x2006/main/CTExtensionList
 
 
my code includes the following:
 
import sys
from java.lang import System, String
from java.io import BufferedReader, InputStreamReader,FileOutputStream,
FileInputStream, File
from org.apache.poi.xssf.usermodel import *
from org.apache.poi.ss.usermodel import WorkbookFactory, Workbook,
DataFormatter, Cell, DataConsolidateFunction
from org.apache.poi.ss.util import *
from org.apache.poi.ss import *
from java.util import Date
from java.text import DateFormat, SimpleDateFormat
from org.openxmlformats.schemas.spreadsheetml.x2006.main import *
def setFormatDataField(pivotTable,fieldIndx, numFormatId):
    pivotTable = pivotTable
    index = fieldIndx
    fmtId = numFormatId   
 
pivotTable.getCTPivotTableDefinition().getDataFields().dataField.getFld(inde
x).dataField.setNumFmtID(FmtId) 
    return None
 
I have confirmed that CTExtension and CTExtensionList exist in the
ooxml-schemas-1.4.jar
 
I have also tried explicitly importing the class file, i.e.  import
org.openxmlformats.schemas.spreadsheetml.x2006.main.CTExtension (and
CTExtension.class) with the same results.
It is though my compiler cannot see this path???
The only solutions online refer to adding dependencies to the POM file, but
I am not running Maven or other "plugins".
Please advise.
Regards,
 
Dave
 
David M Brawner, PMP
3020 Gant Quarters Cir
Marietta, GA  30068
678.545.9171 Mobile