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POI am having trouble with serialization, i need to implement it in java
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  1. POI am having trouble with serialization, i need to implement it in java
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    copied!<p>I have created a program, it is a guessing game but i am having problems learning this new method to serialize it. I have everything already done i just need to make it so the program can save and load open through the method of serialization. I am trying to serialize the "game" part or the play() method of the program so when the next time it loads it willl load the old information.</p> <pre><code> import javax.swing.JOptionPane; import java.io.Serializable; import java.io.ObjectOutputStream; import java.io.FileOutputStream; import java.io.IOException; //Node class class Node { //instance variables public String questionText; public Node leftChild; public Node rightChild; public void displayText() { System.out.println(questionText); } } //Tree class class Tree implements Serializable { private Node root; //constructor public Tree() { root = new Node(); root.leftChild = new Node(); root.rightChild = new Node(); root.questionText = "Does it live on land?"; root.leftChild.questionText ="bear"; // left side is Yes, right side is No root.rightChild.questionText = "parrot"; } public void instruction() { JOptionPane.showMessageDialog(null, "Think of an animal, I will try to guess it, answer yes or no"); } public void play() { Node current = root; Node parent = current; boolean isLeftChild = true; while(true) { parent = current; int response = JOptionPane.showConfirmDialog(null,current.questionText ); //code here for yes if (response == JOptionPane.YES_OPTION) { current = current.leftChild; isLeftChild=true; } //code here for no else if (response == JOptionPane.NO_OPTION) { current = current.rightChild; isLeftChild = false; } if (current.leftChild == null &amp;&amp; current.rightChild == null) { int secondQ = JOptionPane.showConfirmDialog(null, "Is your animal a " + current.questionText + "?"); if (secondQ == JOptionPane.YES_OPTION) { JOptionPane.showMessageDialog(null,"I Guessed your animal!"); return; } else if (secondQ == JOptionPane.NO_OPTION) { Node nodeOne = new Node(); Node nodeTwo = new Node(); nodeOne.questionText = JOptionPane.showInputDialog("Write a question that differentiates your animal from the animal I guessed, it would be yes for your animal"); nodeTwo.questionText = JOptionPane.showInputDialog("What is this animal?"); nodeOne.rightChild = current; nodeOne.leftChild = nodeTwo; // parent.leftChild = nodeOne or parent.rightChild = nodeOne if(isLeftChild == false) { parent.rightChild = nodeOne; System.out.println("right child"); } else { parent.leftChild = nodeOne; System.out.println("left Child"); } return; } } } } public void preOrder(Node localRoot) { if(localRoot != null) { System.out.print(localRoot.questionText + " "); preOrder(localRoot.leftChild); preOrder(localRoot.rightChild); } } public Node getRoot(){ return root; } } public class GuessTheAnimal { public static void main(String[] args) { Tree animal = new Tree(); animal.instruction(); animal.play(); animal.play(); } } </code></pre>
 

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