Microsoft^® एक्सेल फ़ाइल मर्जिंग via Java

// load first Excel file
var book1 = new Workbook("with-charts.xlsx");
// load second Excel file into a separate instance
var book2 = new Workbook("with-images.xlsx");

// merge two workbooks
book1.combine(book2);
// save the target workbook 
book1.save("combined.xlsx");

// create an Array (length=2)
String[] files = new String[2];
// specify file paths to be merged
files[0] = "Book1.xls";
files[1] = "Book2.xls";
// merge the files to save the result
CellsHelper.mergeFiles(files, "cache", "merged.xls");

// Create a Workbook.
Workbook excelWorkbook0 = new Workbook(dataDir + "book1.xls");

// Create another Workbook.
Workbook excelWorkbook1 = new Workbook();

// Copy the first sheet of the first book into second book.
excelWorkbook1.getWorksheets().get(0).copy(excelWorkbook0.getWorksheets().get(0));

// Save the file.
excelWorkbook1.save(dataDir + "out.xls", FileFormatType.EXCEL_97_TO_2003);