The Sheet class represents a single sheet, and the Cell class represents a single cell of a spreadsheet.What is a budget? A budget is a listing of your actual income and the amount you can afford to spend on your expenses and put into savings.
The Workbook class represents the entire collection of sheets. In order to work with Excel files, this library provides a series of classes that represent the different parts of an Excel file. Let's test the above methods in a JUnit test that writes content to the temp.xlsx file and then reads the same file to verify it contains the text we have written: String fileLocation = path.substring(0, path.length() - 1) + "temp.xlsx" įileOutputStream outputStream = new FileOutputStream(fileLocation) Next, let's write the content of the table with a different style: CellStyle style = workbook.createCellStyle() įinally, let's write the content to a “temp.xlsx” file in the current directory and close the workbook: File currDir = new File(".") XSSFFont font = ((XSSFWorkbook) workbook).createFont() tFillPattern(FillPatternType.SOLID_FOREGROUND) tFillForegroundColor(IndexedColors.LIGHT_BLUE.getIndex()) Sheet sheet = workbook.createSheet("Persons") ĬellStyle headerStyle = workbook.createCellStyle() Let's create a method that writes a list of persons to a sheet titled “Persons”.įirst, we will create and style a header row that contains “Name” and “Age” cells: Workbook workbook = new XSSFWorkbook() When the cell type enum value is STRING, the content will be read using the getRichStringCellValue() method of Cell interface: data.get(new Integer(i)).add(cell.getRichStringCellValue().getString()) Ĭells having the NUMERIC content type can contain either a date or a number and are read in the following manner:Īpache POI uses the same interfaces presented in the previous section for writing to an Excel file and has better support for styling than JExcel. Let's expand on the content of each switch case above. Next, let's retrieve the first sheet of the file and iterate through each row: Sheet sheet = workbook.getSheetAt(0) ĭefault: data.get(new Integer(i)).add(" ") Īpache POI has different methods for reading each type of data.
Workbook workbook = new XSSFWorkbook(file) First, let's open the file from a given location: FileInputStream file = new FileInputStream(new File(fileLocation))
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