Workbook workbook = new XSSFWorkbook(new FileInputStream("file.xlsx")); Sheet sheet = workbook.getSheetAt(0); for (Row row : sheet) { for (Cell cell : row) { } } workbook.close(); <dependency> <groupId>com.monitorjbl</groupId> <artifactId>xlsx-streamer</artifactId> <version>2.1.0</version> </dependency> groovy dependencies { implementation 'com.monitorjbl:xlsx-streamer:2.1.0' }