Writing data from Java to Excel

Question

Hi,
I am trying to writhe data from Java to an Excel Sheet by using JACOB.
This is my code :
import java.util.*;
import java.io.*;
//import cost.util.*;
import com.jacob.com.*;
import com.jacob.activeX.*;
class XLStock
     public static void main(String argv[])
          XLStock xls = new XLStock();
          xls.main2(argv);
     public void main2(String argv[])
          System.setSecurityManager(null);
          System.runFinalizersOnExit(true);
          Vector v = new Vector();
          XLSPutItem pi;
          String sheetfile = null;
          ActiveXComponent xl;
          Object xlo=null;
          Object workbooks;
          Object workbook;
          Object sheets;
          Variant vOptn = new Variant();
          vOptn.noParam();
          try
               xl = new ActiveXComponent("Excel.Application");
               xlo = xl.getObject();
               Dispatch.put(xlo, "Visible", new Variant(true));
               xl.setProperty("Visible", new Variant(true));
               workbooks = xl.getProperty("Workbooks").toDispatch();
               Variant vTemp = new Variant(argv[0]);
               workbook = Dispatch.invoke(workbooks, "Open", Dispatch.Method,
                    new Variant[] {vTemp, vOptn, vOptn, vOptn, vOptn, vOptn, vOptn, vOptn, vOptn, vOptn, vOptn, vOptn, vOptn},
                    new int[1]).toDispatch();
               sheets = Dispatch.get(workbook,"Sheets").toDispatch();
               pi = new XLSPutItem();
               if (pi.Parse("1:A1;ciao;6"))
                    v.addElement(pi);
               for (int i=0; i<v.size(); i++)
                    pi = (XLSPutItem)v.elementAt(i);
                    pi.sheet = Dispatch.invoke(sheets, "Item", Dispatch.Get, new Object[] {new Variant(pi.sheetNumber)}, new int[1]).toDispatch();
                    pi.cell = Dispatch.invoke(pi.sheet, "Range", Dispatch.Get, new Object[] {pi.cellName}, new int[1]).toDispatch();
          catch (Exception e)
               e.printStackTrace();
          pi = (XLSPutItem)v.firstElement();
          Dispatch.put(pi.cell, "Value", "ciao");
What happen is that my code always fail at this line :
xl = new ActiveXComponent("Excel.Application");
whit this error :
C:\VJWorks\JNI\jxls>java jxls.XLStock
com.jacob.com.ComFailException: Can't co-create object
at com.jacob.com.Dispatch.createInstance(Native Method)
at com.jacob.com.Dispatch.<init>(Dispatch.java)
at com.jacob.activeX.ActiveXComponent.<init>(ActiveXComponent.java)
at jxls.XLStock.main2(XLStock.java:53)
at jxls.XLStock.main(XLStock.java:28)
Exception in thread "main" java.util.NoSuchElementException
at java.util.Vector.firstElement(Vector.java:450)
at jxls.XLStock.main2(XLStock.java:79)
at jxls.XLStock.main(XLStock.java:28)
I task that something is wrong in my system configuration.
I work on a Win2000 platform and Office 97.
Someone knows the reason of this error and can suggest what to make.
Thanks in advance.
Antonio M.

Answer 1

Antonio, maybe you can post this back to the Jacob list. As an alternative to Jacob, what about Apache POI or writing the data as comma-delimited and opening the file using Runtime?
Hope that may help.
Good luck.