try {

  // creates destination file
  File file = new File("multisheet.xlsx");

  // creates sheet 1 with a PreparedStatement and the sheet name
  MempoiSheet dogsSheet = MempoiSheetBuilder.aMempoiSheet()
                            .withSheetName("Dogs sheet")
                            .withPrepStmt(conn.prepareStatement("SELECT pet_name AS DOG_NAME, pet_race AS DOG_RACE FROM pets WHERE pet_type = 'dog'"))
                            .build();

  // creates sheet 2 with a PreparedStatement and the sheet name
  MempoiSheet catsSheet = MempoiSheetBuilder.aMempoiSheet()
                            .withSheetName("Cats sheet")
                            .withPrepStmt(conn.prepareStatement("SELECT pet_name AS CAT_NAME, pet_race AS CAT_RACE FROM pets WHERE pet_type = 'cat'"))
                            .build();

  // creates sheet 3 with a PreparedStatement and the sheet name
  MempoiSheet birdsSheet = MempoiSheetBuilder.aMempoiSheet()
                            .withSheetName("Birds sheet")
                            .withPrepStmt(conn.prepareStatement("SELECT pet_name AS BIRD_NAME, pet_race AS BIRD_RACE FROM pets WHERE pet_type = 'bird'"))
                            .build();

  // creates MemPOI using its builder
  MemPOI memPOI = MempoiBuilder.aMemPOI()
    .withDebug(true)
    .withFile(file)
    .withAdjustColumnWidth(true)
    .addMempoiSheet(dogsSheet)
    .addMempoiSheet(catsSheet)
    .addMempoiSheet(birdsSheet)
    .build();

    // exports to file and gets the generated report absolute filename
    String absFilename = memPOI.prepareMempoiReportToFile().get();

} catch (ExecutionException e) {
   // using CallableFuture.get() results in an ExecutionException containing the MempoiException with the real error message
   System.out.println(e.getCause().getMessage());
} catch (InterruptedException e) {
   e.printStackTrace();
} catch (SQLException e) {
   e.printStackTrace();
}