Jxl -need help to solve error generated while using createWorkbook() method

Question

I need to copy a template excel file(template will hold the file name) to another new generated excel file (book.xls).
And I was trying this, -
FileInputStream fis = new FileInputStream(template);
jxl.Workbook jwbook = Workbook.getWorkbook(fis);
Sheet jsheet[] = jwbook.getSheets();
int sheetNum = jwbook.getNumberOfSheets();
FileOutputStream fos = new FileOutputStream(pathName + File.separator + "book.xls");
WritableWorkbook outputWorkbook;
            outputWorkbook = Workbook.createWorkbook(fos, jwbook);error showing :-
java.lang.NoSuchMethodError: common.Assert.verify(Z)V
     at jxl.biff.XFRecord.<init>(XFRecord.java:356)
     at jxl.write.biff.CellXFRecord.<init>(CellXFRecord.java:50)
     at jxl.write.WritableCellFormat.<init>(WritableCellFormat.java:87)
     at jxl.write.WritableWorkbook.<clinit>(WritableWorkbook.java:55)
     at jxl.Workbook.createWorkbook(Workbook.java:344)
     at jxl.Workbook.createWorkbook(Workbook.java:326)
     at custom.localopal.actions.TestExcel.processAction(TestExcel.java:581)
     at custom.localopal.actions.TestExcel.main(TestExcel.java:1373)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)Here,-
template is a filename,
pathname is "c://Test",
'template' is also in the same path.
Can any one please help me to identify the problem? What is the reason of the error and how it can be solved?

Answer 1

It looks like the error is on the below line ;
java.lang.NullPointerException
  at oracle.apps.ap.oie.audit.server.AuditReportLinesVORowImpl.isPersonalLine(AuditReportLinesVORowImpl.java:449)
Please check what is the reason for the error.
I am seeing many issues with VO substitution these days which is because the extended VORowImpl is not calling super for those attribiutes which is overridden in the stanard VORowImpl.
Please have a read on the below blog and see whether that is applicable to your VO extension.
Johny's Tips: OAF: Transient Attributes not getting populated in Extended VO
If not, please attach the standard and the custom VO files
Cheers
AJ