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I am trying to read some objects from a file. The code works fine for the first iteration and at the second iteration it gives a StreamCorruptedException. Here is my code, private ArrayList<Cheque> cheques = null; ObjectInputStream ois = null; try { cheques = new ArrayList<Cheque>(4); ois = new ObjectInputStream(new FileInputStream("src\\easycheque\\data\\Templates.dat")); Object o = null; try { o = ois.readObject(); int i=1; while (o != null) { cheques.add((Cheque) o); System.out.println(i++); // prints the number of the iteration o = ois.readObject(); // exception occurs here } } catch (ClassNotFoundException ex) {// for ois readObject() Logger.getLogger(TemplateReader.class.getName()).log(Level.SEVERE, null, ex); } catch (EOFException ex) {// for ois readObject() // end of the file reached stop reading System.out.println("ois closed"); ois.close(); } } catch (IOException ex) { Logger.getLogger(TemplateReader.class.getName()).log(Level.SEVERE, null, ex); } below is part of the exception. Before printing this '1' is printed (because of the sout) SEVERE: null java.io.StreamCorruptedException: invalid type code: AC at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1356) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) I can't figure out why this is happening. In few forum posts, I came across that this happens when you append to a file during writing it. Is it the real reason?. (I am appending to the file during writing phase). If so is there a proper way to read an appended file? here is the code i use to write to the file <p

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