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copied!<p>Take a look at this (write/read/delete) </p> <pre><code>class Scr extends MainScreen implements FieldChangeListener { ButtonField mWrite; ButtonField mRead; ButtonField mDelete; String mFileName = System.getProperty("fileconn.dir.photos") + "test.bmp"; public Scr() { mWrite = new ButtonField("Write file", ButtonField.CONSUME_CLICK); add(mWrite); mWrite.setChangeListener(this); mRead = new ButtonField("Read file", ButtonField.CONSUME_CLICK); add(mRead); mRead.setChangeListener(this); mDelete = new ButtonField("Delete file", ButtonField.CONSUME_CLICK); add(mDelete); mDelete.setChangeListener(this); } public void fieldChanged(Field field, int context) { if (mWrite == field) { byte[] bytes = new byte[] { 1, 2, 1, 1 }; writeFile(bytes, mFileName); Dialog.inform("File " + mFileName + " saved"); } else if (mRead == field) { byte[] bytes = readFile(mFileName); if (null != bytes) Dialog.inform("File " + mFileName + " opened"); } else if (mDelete == field) { deleteFile(mFileName); Dialog.inform("File " + mFileName + " deleted"); } } private void writeFile(byte[] data, String fileName) { FileConnection fconn = null; try { fconn = (FileConnection) Connector.open(fileName, Connector.READ_WRITE); } catch (IOException e) { System.out.print("Error opening file"); } if (fconn.exists()) try { fconn.delete(); } catch (IOException e) { System.out.print("Error deleting file"); } try { fconn.create(); } catch (IOException e) { System.out.print("Error creating file"); } OutputStream out = null; try { out = fconn.openOutputStream(); } catch (IOException e) { System.out.print("Error opening output stream"); } try { out.write(data); } catch (IOException e) { System.out.print("Error writing to output stream"); } try { fconn.close(); } catch (IOException e) { System.out.print("Error closing file"); } } private byte[] readFile(String fileName) { byte[] result = null; FileConnection fconn = null; try { fconn = (FileConnection) Connector.open(fileName, Connector.READ); } catch (IOException e) { System.out.print("Error opening file"); } if (!fconn.exists()) { Dialog.inform("file not exist"); } else { InputStream in = null; ByteVector bytes = new ByteVector(); try { in = fconn.openInputStream(); } catch (IOException e) { System.out.print("Error opening input stream"); } try { int c = in.read(); while (-1 != c) { bytes.addElement((byte) c); c = in.read(); } result = bytes.getArray(); } catch (IOException e) { System.out.print("Error reading input stream"); } try { fconn.close(); } catch (IOException e) { System.out.print("Error closing file"); } } return result; } private void deleteFile(String fileName) { FileConnection fconn = null; try { fconn = (FileConnection) Connector.open(fileName, Connector.READ_WRITE); } catch (IOException e) { System.out.print("Error opening file"); } if (!fconn.exists()) { Dialog.inform("file not exist"); } else { try { fconn.delete(); } catch (IOException e1) { System.out.print("Error deleting file"); } try { fconn.close(); } catch (IOException e) { System.out.print("Error closing file connection"); } } } </code></pre>

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