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POjava.io.StreamCorruptedException: invalid type code: AC
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  1. POjava.io.StreamCorruptedException: invalid type code: AC
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    copied!<p>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,</p> <pre><code>private ArrayList&lt;Cheque&gt; cheques = null; ObjectInputStream ois = null; try { cheques = new ArrayList&lt;Cheque&gt;(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); } </code></pre> <p>below is part of the exception. Before printing this '1' is printed (because of the sout)</p> <pre><code>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) </code></pre> <p>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? </p> <p>here is the code i use to write to the file</p> <pre><code> ObjectOutputStream objectOut = new ObjectOutputStream(new FileOutputStream("src\\easycheque\\data\\templates.dat", true)); objectOut.writeObject(cheque); objectOut.flush(); objectOut.close(); </code></pre> <p>writing is not an iterative process.</p> <p>Thank you :)</p>
 

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