String fichierCSV = args[0]; String fichierXML; fichierXML = fichierCSV.replaceFirst("(csv)$", "xml"); try { BufferedInputStream csv = new BufferedInputStream(new FileInputStream(new File(fichierCSV))); BufferedOutputStream xml = new BufferedOutputStream(new FileOutputStream(new File(fichierXML))); } catch (java.io.FileNotFoundException e) { System.err.println(e.getMessage()); System.exit(1); }