My java program can't read the EXCEL file generated by BI Publisher

Question

I have a program that generates excel file and another program that reads the previously generated file.
I'm getting this error when my code reads the file using the "HSSFWorkbook" object:
Exception in thread "main" java.io.IOException: Invalid header signature; read 3271134372600964429, expected -2226271756974174256
     at org.apache.poi.poifs.storage.HeaderBlockReader.<init>(HeaderBlockReader.java:112)
     at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:151)
     at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:298)
Edited by: user1900500 on Mar 11, 2011 3:37 PM

Answer 1

If you're using JDK 5 or later, you could use the Scanner class for input information. See below:
try {
               Scanner reader = new Scanner(new File("C:\\boot.ini"));
               StringBuilder sb = new StringBuilder();
               while (reader.hasNextLine()) {
                    sb.append(reader.nextLine());
                    sb.append(System.getProperty("line.separator"));
               System.out.println(sb.toString());
          } catch (FileNotFoundException e) {
               e.printStackTrace();
          }