Created attachment 22279 [details]
Test Data

I am using POI 3.5 Beta 1.
I write following code to list all the Named Range in the Excel Workbook.

Workbook wb = new XSSFWorkbook(xlsx_path);
for(int j=0; j<wb.getNumberOfNames(); j++){
	Name name = wb.getNameAt(j);				
	String reference = name.getReference();
	String sheetName = name.getSheetName();
	System.out.println("reference: " + reference);
	System.out.println("sheetName: " + sheetName);
}

I found that the .getSheetName() method return the wrong value, it always return sheet one name, which doesn't match with .getReference() (the sheet name part).

I have uploaded a sample .xlsx file, which contains three worksheets, each worksheet $A$1 has defined a named range. You can run above codes to check the result.

Expected Result:
reference: SheetA!$A$1
sheetName: SheetA
reference: SheetB!$A$1
sheetName: SheetB
reference: SheetC!$A$1
sheetName: SheetC

Actual Result:
reference: SheetA!$A$1
sheetName: SheetA
reference: SheetB!$A$1
sheetName: SheetA
reference: SheetC!$A$1
sheetName: SheetA