The method openFileDialog(null, null) is undefined for the type FileOpenService ------------------------------------------------------------------------------- Key: JBDS-3371 URL: https://issues.jboss.org/browse/JBDS-3371 Project: Developer Studio (JBoss Developer Studio) Issue Type: Bug Environment: JBoss Developer Studio Version: 8.0.2.GA Reporter: Ludumo Sankobe Im getting "The method openFileDialog(null, null) is undefined for the type FileOpenService" error wen trying to run the code bellow.: {code} package com.hrtrust.ps.scanner; // add javaws.jar to the classpath during compilation import javax.jnlp.FileOpenService; import javax.jnlp.FileSaveService; import javax.jnlp.FileContents; import javax.jnlp.ServiceManager; import javax.jnlp.UnavailableServiceException; import java.io.*; import javax.jnlp.ExtendedService; public class FileHandler { static private FileOpenService fos = null; static private FileSaveService fss = null; static private FileContents fc = null; static private ExtendedService exs = null; // retrieves a reference to the JNLP services private static synchronized void initialize() { if (fss != null) { return; } try { fos = (FileOpenService) ServiceManager.lookup("javax.jnlp.FileOpenService"); fss = (FileSaveService) ServiceManager.lookup("javax.jnlp.FileSaveService"); exs = (ExtendedService) ServiceManager.lookup("javax.jnlp.ExtendedService"); } catch (UnavailableServiceException e) { fos = null; fss = null; exs = null; } } public static FileContents getDLL(File dllFile) { initialize(); try { fc = exs.openFile(dllFile); } catch (IOException ioe) { ioe.printStackTrace(System.out); return null; } return fc; } // displays open file dialog and reads selected file using FileOpenService public static String open() { initialize(); try { fc = fos.openFileDialog(null, null); return readFromFile(fc); } catch (IOException ioe) { ioe.printStackTrace(System.out); return null; } } // displays saveFileDialog and saves file using FileSaveService public static void save(String txt) { initialize(); try { // Show save dialog if no name is already given if (fc == null) { fc = fss.saveFileDialog(null, null, new ByteArrayInputStream(txt.getBytes()), null); // file saved, done return; } // use this only when filename is known if (fc != null) { writeToFile(txt, fc); } } catch (IOException ioe) { ioe.printStackTrace(System.out); } } // displays saveAsFileDialog and saves file using FileSaveService public static void saveAs(String txt) { initialize(); try { if (fc == null) { // If not already saved. Save-as is like save save(txt); } else { fc = fss.saveAsFileDialog(null, null, fc); save(txt); } } catch (IOException ioe) { ioe.printStackTrace(System.out); } } private static void writeToFile(String txt, FileContents fc) throws IOException { int sizeNeeded = txt.length() * 2; if (sizeNeeded > fc.getMaxLength()) { fc.setMaxLength(sizeNeeded); } BufferedWriter os = new BufferedWriter(new OutputStreamWriter(fc.getOutputStream(true))); os.write(txt); os.close(); } private static String readFromFile(FileContents fc) throws IOException { if (fc == null) { return null; } BufferedReader br = new BufferedReader(new InputStreamReader(fc.getInputStream())); StringBuffer sb = new StringBuffer((int) fc.getLength()); String line = br.readLine(); while (line != null) { sb.append(line); sb.append("\n"); line = br.readLine(); } br.close(); return sb.toString(); } } {code} NB. fc = fos.openFileDialog(null, null); is the line that gives an error. (FileOpenService)....FileSaveService and FileContents works just fine.