HashMap to file?

[PaPa_Smerf]

How can i write a HashMap to a file so it can be loaded the next time i run the program? i've been going crazy trying to figure this out!

Thanks,
~X

[sjalle]

Use serialization for any java object that you want to store in a file. Check out the usage of the ObjectOutput/Input -file.

[PaPa_Smerf]

I already did that... it gives me this error:
"java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: Player"

here's my serialization class:

import java.util.*;
import java.io.*;


public class LoadSave extends Player implements Serializable 
{
    private File filename = new File("sList.sav");
    private HashMap list;
      
    /**
     * 
     */
    public LoadSave(HashMap list)
    {
        this.list = list;
    }

    /**
     * 
     */
    public boolean load()
    {
        if(filename.exists())
            try {
              ObjectInputStream in = new ObjectInputStream(
              new FileInputStream(filename));
              list = (HashMap)in.readObject();
              in.close();
            }
            catch(ClassNotFoundException e) {
                if (PlayXandersGame.DEBUG)
                    System.out.println(e);
            return false;
            } 
            catch (NotSerializableException e)  {
                if (PlayXandersGame.DEBUG)
                    System.out.println(e);
            return false;
            }
            catch (FileNotFoundException e) {
                if (PlayXandersGame.DEBUG)
                    System.out.println(e);
            return false;
            }
            catch(IOException e) {
                if (PlayXandersGame.DEBUG)
                    System.out.println(e);
            return false;
            }
        return true;
    }
    public boolean save() 
    {
        try {
            System.out.println("Saving Character List");
            ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(filename));
            out.writeObject(list);
            out.close();
        } 
        catch (NotSerializableException e)  {
            if (PlayXandersGame.DEBUG)
                System.out.println(e);
            return false;
        }
        catch (FileNotFoundException e) {
            if (PlayXandersGame.DEBUG)
                System.out.println(e);
            return false;
        }
        catch(IOException e) {
            if (PlayXandersGame.DEBUG)
                System.out.println(e);
            return false;
        }
        return true;
    }
}

[PaPa_Smerf]

Nevermind, i figured it out!

Thx,
~X