<dependency> <groupId>com.adams.Excelframework</groupId> <artifactId>adams-excelframework</artifactId> <version>1.0</version> </dependency> ExcelReader reader = new ExcelReader("path/to/excel/file.xlsx"); List<List<String>> data = reader.readAll(); ExcelWriter writer = new ExcelWriter("path/to/excel/file.xlsx"); writer.write(0, 0, "Hello"); writer.write(0, 1, "World"); writer.mergeCells(0, 0, 0, 1); writer.setCellFormat(0, 0, CellFormat.BOLD);