Storing values for object instances between runs

Question

I'm writing a simple 2d game and I'm trying to create an object to handle the information about individual tiles on the board.
The tile class will handle three pieces of information:
1. an image to represent the tile
2. a boolean value (true if the tile can be passed through, false if it blocks movement)
3. a name to describe the surface (mostly for management purposes - so I can say load("whiteMarble01") instead of using the full directory.)
I plan to pre-build instances of these so that the tiles can be quickly placed with all their options pre-assigned.
How would you store this data between runs of the game?
My first thought was a folder (named whatever the name should be) containing an image file and a text file (which contains all the remaining values to be parsed). I don't think this is very good since the text file would only serve to store the boolean.
Is there a better way?

Answer 1

You can also use any of the standard XML APIs or java.beans classes XMLEndcoder and XMLDecoder:
import java.beans.*;
import java.io.*;
import java.util.*;
public class ExampleBean {
    private String name;
    private int code;
    public void setName(String name) {
        this.name = name;
    public String getName() {
        return name;
    public void setCode(int code) {
        this.code = code;
    public int getCode() {
        return code;
    public ExampleBean() {
    public ExampleBean(String name, int code) {
        setName(name);
        setCode(code);
    @Override public String toString() {
        return "(" + getName() + ", " + getCode() + ")";
    public static void main(String[] args) throws IOException {
        List<ExampleBean> beans = new ArrayList<ExampleBean>();
        beans.add(new ExampleBean("Homer", 40));
        beans.add(new ExampleBean("Marge", 37));
        File file = new File("temp.xml");
        XMLEncoder e = new XMLEncoder(
            new BufferedOutputStream(
            new FileOutputStream(file)));
        e.writeObject(beans);
        e.close();
        XMLDecoder d = new XMLDecoder(
            new BufferedInputStream(
            new FileInputStream(file)));
        System.out.println(d.readObject());
        d.close();
}temp.xml:
<?xml version="1.0" encoding="UTF-8"?>
<java version="1.6.0" class="java.beans.XMLDecoder">
<object class="java.util.ArrayList">
  <void method="add">
   <object class="ExampleBean">
    <void property="code">
     <int>40</int>
    </void>
    <void property="name">
     <string>Homer</string>
    </void>
   </object>
  </void>
  <void method="add">
   <object class="ExampleBean">
    <void property="code">
     <int>37</int>
    </void>
    <void property="name">
     <string>Marge</string>
    </void>
   </object>
  </void>
</object>
</java>