Help java.io.NotSerializableException

From:

"Netlopa" <netlopaNO@SPAM.it>

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 3 Jun 2009 21:58:26 +0200

Message-ID:

<h06klm$n17$1@news.gabrix.ath.cx>

This is a multi-part message in MIME format.

------=_NextPart_000_0042_01C9E496.6C3B4220
Content-Type: text/plain;
 charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Hello,

I'm creating a project (a game) for the university ... but I am in =
trouble with the management of files (for now, the save).

I still have this exception "java.io.NotSerializableException".
I tried to put anything as a parameter ... but nothing.

To give you an example: the class crossfire.Orco contains various =
attributes and methods inside ... I would not want this to be the =
problem and then that should put the "primitive types" (like int, =
String, etc ...) separated.

Do you have an idea?

Thanks in advance

Netlopa

--
Here I post the code I used for save the file

public class File {



 /**

 * Create a simple Hashtable and serialize it to a file called

 * HTExample.ser.

 */

 public static void doSave(Object gestore) {

 System.out.println();

 System.out.println("+------------------------------+");

 System.out.println("| doSave Method |");

 System.out.println("+------------------------------+");

 System.out.println();



 Hashtable h = new Hashtable();

 h.put("gestore.Partita", gestore);



 /*h.put("string", "Oracle / Java Programming");

 h.put("int", new Integer(36));

 h.put("double", new Double(Math.PI));*/







 try {

 System.out.println("Creating File/Object output stream...");



 FileOutputStream fileOut = new =
FileOutputStream("D:\\HTExample.ser");

 ObjectOutputStream out = new ObjectOutputStream(fileOut);

 System.out.println("Writing Hashtable Object...");

 out.writeObject(h);

 System.out.println("Closing all output streams...\n");

 out.close();

 fileOut.close();



 } catch(FileNotFoundException e) {

 e.printStackTrace();

 } catch (IOException e) {

 e.printStackTrace();

 }

 }

------=_NextPart_000_0042_01C9E496.6C3B4220
Content-Type: text/html;
 charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" =
http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.18702">
<STYLE></STYLE>
</HEAD>
<BODY>
<DIV>Hello,</DIV>
<DIV> </DIV>
<DIV>I'm creating a project (a game) for the =
university
.... but I am in trouble with the management of files (for now, the
save).</DIV>
<DIV> </DIV>
<DIV>I still have this exception
"java.io.NotSerializableException". I tried to put anything as a
parameter  ... but nothing.</DIV>
<DIV> </DIV>
<DIV>To give you an example: the class =
crossfire.Orco
contains various attributes and methods inside ... I would not want this =
to be
the problem and then that should put the "primitive types" (like int, =
String,
etc ...) separated.</DIV>
<DIV> </DIV>
<DIV>Do you have an idea?</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Thanks in advance</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Netlopa</DIV>
<DIV> </DIV>
<DIV>--</DIV>
<DIV>Here I post the code I used for save =
the
file</DIV>
<DIV> </DIV>
<DIV><?xml:namespace
prefix = o ns = "urn:schemas-microsoft-com:office:office" =
/><o:p></o:p>
public
class =
File
{<?xml:namespace prefix = u4 /><u4:p></u4:p>
     
<u4:p></u4:p>
   
/**<u4:p></u4:p><o:p></o:p>
     * Create a simple Hashtable and serialize it to a file called<u4:p></u4:p><o:p></o:p>
     * HTExample.ser.<u4:p></u4:p><o:p></o:p>
     */<u4:p></u4:p><o:p></o:p>
    public static void doSave(Object gestore) {<u4:p></u4:p><o:p></o:p>
<u4:p> </u4:p><o:p></o:p>
        =
System.out.println();<u4:p></u4:p><o:p></o:p>
        =
System.out.println("+------------------------------+");<u4:p></u4:p><o:p></o:p>
        =
System.out.println("| doSave
Method           &=
nbsp;   
|");<u4:p></u4:p><o:p></o:p>
        =
System.out.println("+------------------------------+");<u4:p></u4:p><o:p></o:p>
        =
System.out.println();<u4:p></u4:p><o:p></o:p>
       <u4:p></u4:p><o:p></o:p>
        Hashtable =
h =
new Hashtable();<u4:p></u4:p><o:p></o:p>
       
h.put("gestore.Partita", gestore);<u4:p></u4:p><o:p></o:p>
   <u4:p></u4:p><o:p></o:p>
        /*h.put("string", "Oracle / Java Programming");<u4:p></u4:p><o:p></o:p>
        =
h.put("int", new
Integer(36));<u4:p></u4:p><o:p></o:p>
        h.put("double", =
new
Double(Math.PI));*/<u4:p></u4:p><o:p></o:p>
        <u4:p></u4:p><o:p></o:p>
       <u4:p></u4:p><o:p></o:p>
        <u4:p></u4:p><o:p></o:p>
<u4:p> </u4:p><o:p></o:p>
        try {<u4:p></u4:p><o:p></o:p>
<u4:p> </u4:p><o:p></o:p>
          =
 
System.out.println("Creating File/Object output stream...");<u4:p></u4:p><o:p></o:p>
          =

<u4:p></u4:p><o:p></o:p>
          =
 
FileOutputStream fileOut = new FileOutputStream("D:\\HTExample.ser");<u4:p></u4:p><o:p></o:p>
          =
 
ObjectOutputStream out = new ObjectOutputStream(fileOut);<u4:p></u4:p><o:p></o:p>
<u4:p> </u4:p><o:p></o:p>
          =
 
System.out.println("Writing Hashtable Object...");<u4:p></u4:p><o:p></o:p>
          =
 
out.writeObject(h);<u4:p></u4:p><o:p></o:p>
<u4:p> </u4:p><o:p></o:p>
          =
 
System.out.println("Closing all output streams...\n");<u4:p></u4:p><o:p></o:p>
          =
 
out.close();<u4:p></u4:p><o:p></o:p>
          =
 
fileOut.close();<u4:p></u4:p><o:p></o:p>
          =

<u4:p></u4:p><o:p></o:p>
        } =
catch(FileNotFoundException e) {<u4:p></u4:p><o:p></o:p>
          =
 
e.printStackTrace();<u4:p></u4:p><o:p></o:p>
        } =
catch (IOException e) {<u4:p></u4:p><o:p></o:p>
          =
 
e.printStackTrace();<u4:p></u4:p>
       
}<u4:p></u4:p>
   
}<u4:p></u4:p><SPAN
style="LINE-HEIGHT: 115%; FONT-FAMILY: 'Times New Roman','serif'; =
FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'; =
mso-fareast-language: IT; mso-ansi-language: IT; mso-bidi-language: =
AR-SA">
<DIV> </DIV></DIV></BODY></HTML>

------=_NextPart_000_0042_01C9E496.6C3B4220--