How to convert CSV to proper Excel file (every name in diffrent cell)

From:

Marzena <marzena.bortnik@gmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sat, 19 Apr 2008 09:28:45 -0700 (PDT)

Message-ID:

<a9fc7e35-d649-4c93-9ce6-1643fa985bc6@a23g2000hsc.googlegroups.com>

Hi,
I made application which needs to save the report file. I got report
file from the database and i got it as ResulSet.
I found in internet library calls CSVWriter which helps me save the
raport. The problem is that i dont know how to parse it to proper
Excel look.The code looks like this :

FileDialog d = new FileDialog(frame,"What file do you want to
save?",FileDialog.SAVE);
  d.setFile("*.csv");
  d.setDirectory(".");
  d.show();
  String saveFile;
  if((saveFile = d.getFile()) != null) {
     filename.setText(saveFile);
     directory.setText(d.getDirectory());
      try{
       CSVWriter writer = new CSVWriter(new
FileWriter(directory.getText()+filename.getText()), ',');
       writer.writeAll(rsDane2 , t);
       writer.close();
       }catch(java.sql.SQLException e){e.printStackTrace();}
       catch(java.io.IOException f){ f.printStackTrace(); }
  } else {
  filename.setText("You pressed cancel");
  directory.setText("");
  }

I would be greatfull for any help. Im looking for two solutions.
1) How can I convert saved csv file to Excel or diffrent type of file
( The prioritet is the data be visable ) Cause with comma i cant see
anything :(
2) Maybe there is diffrent way to save ResultSet to the excel file.
This is really big array so i think the best way is to save it in
excel file