StreamCorruptedException when trying to deserialize Object containing a Vec

Question

Hello,
I am trying to send an Object containing an (currently empty) Vector with ObjectInput/Output-Streams.
But when deserializing the Object I always get a StreamCorruptedException: null.
As soon as I remove the Vector from the Object everything works as it should.
Anybody can tell me, what is happening here? I didn�t expect any trouble with the Vector since it implements Serializable and doesn�t contain anything, yet.
Thanks,
Philipp

Answer 1

Hello again.
to exclude problems with the HttpMessage-class I rewrote the applet-part to use an URLConnection. No you can see, what the HttpMessag-class does normally. It still raises the same error.
Here it is:
String argstring = URLEncoder.encode("command", "UTF-8") + "=" + URLEncoder.encode(command, "UTF-8");
URL url = new URL(codeBase, chatServer);
URLConnection con = url.openConnection();
// Prepare for both input and output
con.setDoInput(true);
con.setDoOutput(true);
// Turn off caching
con.setUseCaches(false);
// Work around a Netscape bug
con.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
// Write the arguments as post data
DataOutputStream out = new DataOutputStream(con.getOutputStream());
out.writeBytes(argstring);
out.flush();
out.close();
InputStream in = con.getInputStream();
ObjectInputStream oin = new ObjectInputStream(in);
ChatCommandReply reply = (ChatCommandReply) oin.readObject();
} catch (Exception ex)
ex.printStackTrace();
BTW, the stackTrace looks like this:
java.io.StreamCorruptedException
     at java.io.ObjectInputStream.readObject0(Unknown Source)
     at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
     at java.io.ObjectInputStream.readSerialData(Unknown Source)
     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
     at java.io.ObjectInputStream.readObject0(Unknown Source)
     at java.io.ObjectInputStream.readObject(Unknown Source)
     at com.byteshift.vobaclub.chat.client.Chatroom.sendCommand(Chatroom.java:217)
     at com.byteshift.vobaclub.chat.client.Chatroom.stop(Chatroom.java:256)
     at com.byteshift.vobaclub.chat.client.ChatApplet.stop(ChatApplet.java:72)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Regards,
Philipp