Workbook workbook = new Workbook();
		Workbook workbook2 = new Workbook();
		
		workbook.open("GcExcelSample.xlsx");
		workbook2.open("hangulBinding.xlsx");
		
		for(int i = 0;i<workbook2.getWorksheets().getCount();i++) {
			workbook.getWorksheets().add();
			IWorksheet worksheet = workbook2.getWorksheets().get(i);
			worksheet.setName("Sheet"+workbook.getWorksheets().getCount());
			String json = worksheet.toJson();
			workbook.getWorksheets().get(workbook.getWorksheets().getCount()-1).fromJson(json);
		}
		workbook.save("new.xlsx");