serialization

[Gautam Sewani]

import java.io.*;
class ser implements Serializable {
int b=20;
public static void main(String ar[]) 
{
try{ 
 ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream("ser"));
 oos.writeObject(new  ser());
ObjectInputStream ois=new ObjectInputStream(new FileInputStream("ser"));
ser s=(ser)ois.readObject();
System.out.println("ser's b:"+
s.b);
}catch(Exception e){System.out.println(e+":exception in serialization");}
}
}

Why does the following code throw a NotSerializableException?
It says that ser class is Not Serializable,but ser implements serializable interface,so why is it not serializable?

[Paulo Silveira]

nice question

[Roy Ben Ami]

this compiles and runs fine for me with no exceptions!
whats jdk are you using?
just as an after thought though you should always close the streams as a good habit. so close the output stream before trying to read from it and then close the input stream too.

[Gautam Sewani]

I m using jdk1.2
What version r u using?

[Roy Ben Ami]

im using 1.4 ... :roll:
weird. tried searching the bug database in sun but they dont have a bug like you mentioned.
however, there are quite a few bugs there related to serialize objects in 1.2, maybe it is just one of them.
try closing the streams like i mentioned and maybe it will help.

[Anonymous]

I tried it with 1.4 and it works

[Gautam Sewani]

Can anyone please try this on jdk1.2 and see wether this works or not?