("Exception: " + ex.getMessage()) Į:\TEST_PROJECTS\ExcelTest1>java .lsr.testingīut when i create a executable and run the same program, it gives me error:Į:\TEST_PROJECTS\ExcelTest1>excelTest1.exeĮ:\TEST_PROJECTS\ExcelTest1>echo %classpath%Ĭ:\WINNT\DnClasses\jxl.jar. String msg = lsrrecord.writeLSR("LSRRECORD.XLS") WritableSheet lsr = LSRbook.createSheet("LSR",0) The following program demonstrates the use of JXL api for writing and reading excel files. It is an open source java API enabling developers to read and modify them. You can read, write, and modify Excel spreadsheets dynamically using Java Excel API. WritableWorkbook LSRbook = Workbook.createWorkbook(new File(fileName)) Using JXL to Write and Read Microsoft Excel Data. Public String writeLSR(String fileName) throws WriteException, Exception but when i use it with VJ++, i get the following error. WritableCellFormat bodyText new WritableCellFormat(workbook, WritableWorkbook.
Is there a good API which can help me? After searcing, i found jxl.jar. is a collection of tips and knowledge in tech and programming topics ranging from ASP. The API should be changed so that the constructors require as an argument the workbook they relate to, or the constructors should be private and the fonts and formats should be obtained from the workbook. But strangely if i open the file with openoffice, it works!Įdit: perhaps i found a solution, put this after changing the values: HSSFFormulaEvaluator.I am using VJ++ to read and write Excel Files. Hello i have the same problem than neXGen. tForceFormulaRecalculation(true) īut it's necesary that you apply the method setForceFormulaRecalculation for all the tabs that have the formulas. I refresh the formulas with another tab for this I use the next sentence HSSFSheet worksheetse = workbook.getSheetAt(0) If you open the OutputStream any earlier, your changes would not be written to the file after your program exits and you would be scratching your head as I did. Zabbala's example is spot on and shows this correctly. But when i try to add a new column and write the sheet its showing null pointer exception. Open the OutputStream only after you have completed writing to your excel workbook. Im using jxl api for editing an existing excel file. One very important tip that I learned the hard way.
String cellContents = cell.getStringCellValue() įileOutputStream fileOut = new FileOutputStream("wb.xls") Workbook wb = WorkbookFactory.create(inp) To review, open the file in an editor that reveals hidden Unicode characters.
Here's an simple example of editing one cell: InputStream inp = new FileInputStream("wb.xls") This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. They use an external JAR developed by the Apache POI project. Step 4: in this step we are reading data from the Excel sheet. Step 3: create a Excel sheet with some data. make jxl.jar available to your class path.
The tutorials here are very helpful and well-written. Step2: after downloading extract the zip file.