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copied!<p>Works for me, GNU/Linux with gij 4.3.2.</p> <p>Make sure all of your fields in the Node class are serializable as well.</p> <p>This is the code I tried (should be equivalent to yours):</p> <pre><code>import java.io.*; public class TestCase { public static void main(String[] args) { try { if (args.length > 0 && args[0].equals("read")) { ObjectInputStream ois = new ObjectInputStream( new FileInputStream("File.log") ); Node root = (Node) ois.readObject(); ois.close(); System.out.println("Root value: " + root.getValue()); for(Node n : root.children()) System.out.println("Child: " + n.getValue()); return; } Node root = new Node(null, "First"); root.add( new Node(root, "Second.Child.1"), new Node(root, "Second.Child.2") ); ObjectOutputStream oos = new ObjectOutputStream( new FileOutputStream("File.log") ); oos.writeObject(root); oos.close(); } catch(Exception e) { System.err.println(e.getMessage()); e.printStackTrace(); } } } class Node implements Serializable { private static final long serialVersionUID = 2304728943L; private Node _parent; private Node[] _children; private String _value; public Node(Node parent, String value) { this._parent = parent; this._value = value; this._children = new Node[2]; } public void add(Node child, Node child2) { this._children[0] = child; this._children[1] = child2; } public String getValue() { return this._value; } public Node[] children() { return this._children; } public Node parent() { return this._parent; } } </code></pre>

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