Socket Object Serialization StreamCorruptionException

Question

Hi,
I'm currently attempting to send objects across the network via serialization. I can send Strings back and forth from client to server and server to client without a problem, but when i try to send and recieve a different object (one i wrote) i get EOFException or StreamCorruptionException. This was working before i added a considerable amout to the code. I just don't understand why it breaks now. Any help would be greatly appreciated. And i apologize in advance for leaving all of my print statements in.
public class ServerThread extends Thread {
     private Socket socket = null;
     private Buyer buyer = null;
     private Bid bid = null;
     private Auctioneer auctioneer = null;
     private int clientId;
     private String userInfo[] = new String[2];
     private static final String REQUEST_NAME = "1";
     private static final String SUCCESS = "SUCCESS";
     private static final String FAIL = "FAIL";
    private static ObjectOutputStream out = null;
    private static ObjectInputStream in = null;
     public ServerThread(Socket socket, Auctioneer auctioneer, int clientId) throws SocketException{
          super("ServerListenerThread");
          this.socket = socket;
          this.auctioneer = auctioneer;
          this.clientId = clientId;
          this.setPriority( 10 );
     public boolean userExists(String name){
          for (Iterator it = auctioneer.getBuyers().iterator(); it.hasNext();){
               buyer = (Buyer)it.next();
               if(buyer.getName().equals( userInfo[0])) return true;
          return false;
     public void run(){
          try {
               in = new ObjectInputStream(socket.getInputStream());
               out = new ObjectOutputStream(socket.getOutputStream());
               Integer cid = new Integer(clientId);
               bid = null;
               buyer = null;
               String msg = null;
               try{
                    // listen for login: user/password
                    msg = (String)in.readObject();
                    userInfo[0] = msg.substring(0,msg.indexOf(","));
                    userInfo[1] = msg.substring(msg.indexOf(",") + 1, msg.length());
                    if(userExists(userInfo[0])){
                         System.out.println("wes already logged in");
                         out.writeObject(FAIL);
                         return;
                    else
                         System.out.println("wes not logged in");
                         out.writeObject(SUCCESS);
                    out.writeObject(cid);
                    out.flush();
                    buyer = (Buyer)in.readObject();
                    auctioneer.addBuyer( buyer);
               int n = 0;
               while ((bid = (Bid)in.readObject()) != null && !auctioneer.exit){
                    auctioneer.addBid(bid);
                    n++;
                    System.out.println("this was bid: " + bid.getBidAmt() + " this many times " + n);
               }catch(SocketException e){
                    System.out.println("Client " + clientId + " Disconnected!!!");
                    //controller.notifyLostClient(buyer);
                    auctioneer.removeBuyer( buyer);
                    auctioneer.update();
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          } catch (ClassNotFoundException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();}
Client Side
public boolean connect(){
          boolean connect = false;
          System.out.println("trying to connect...");
               for(int i = 0; i <=9; i++){
                    System.out.println("trying to connect...");
                    try {
                         socket = new Socket(ip, PORT);
                         socket.setTcpNoDelay( true );
                         System.out.println("this doesn't take long");
                         out = new ObjectOutputStream(socket.getOutputStream());
                         in = new ObjectInputStream(socket.getInputStream());
                         connect = true;
                         break;
                    }catch(UnknownHostException e){
                         System.out.println("No Server At: " + ip[i].getHostAddress() );
                    }catch(IOException e){
                         System.out.println("No Server At: " + ip[i].getHostAddress() );
               if(connect){
                    return true;
               else{
                    int i = JOptionPane.showConfirmDialog(null,
                              " Couldn't find " + HOST + "\n Try Again?"
                              , "WARNING", JOptionPane.YES_NO_OPTION,
                              JOptionPane.QUESTION_MESSAGE);
                    if (i == 1)
                         System.exit(1);
                    else {
                         return false;
               return false;
     public boolean login(){
          try {
               try {
                    String msg = USER + "," + PASSWORD;
                    out.writeObject( msg );
                    out.flush();
                    msg = (String)in.readObject();
                    System.out.println(msg);
                    if(msg.equals("SUCCESS")){
                         clientId = (Integer)in.readObject();
                         System.out.println("Client " + clientId.toString() );
                         msg = "TEST";
                         out.writeObject( msg );
                         out.flush();
                         Bid newBid = new Bid(buyer, 12);
                         out.writeObject(newBid);
                         out.flush();
                         buyer = new Buyer(USER,clientId,socket.getLocalAddress().getHostName());
                         out.writeObject(buyer);
                         out.flush();
                         Object obj = in.readObject();
                    else{
                         int i = JOptionPane.showConfirmDialog(null,
                                   " System could not log you in\n Try Again?"
                                   , "WARNING", JOptionPane.YES_NO_OPTION,
                                   JOptionPane.QUESTION_MESSAGE);
                         if (i == 1)
                              System.exit(1);
                         else
                              return false;
               } catch (ClassNotFoundException e1) {
                    e1.printStackTrace();
          } catch (IOException e2) {
               e2.printStackTrace();
          new ClientListenerThread(controller).start();
          return true;
Any Ideas???

Answer 1

I fogot to give the code of the objects im sending across
package taxsale.shared;
import java.io.Serializable;
* Created on May 27, 2005
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
* @author Admin
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
public class Bid implements Serializable{
     private int bidAmt;
     private Buyer buyer;
     private String time;
     public Bid(){
          this.buyer = new Buyer("", new Integer(0), "");
          this.bidAmt = 19;
     public Bid(Buyer buyer, int bidAmt){
          this.buyer = buyer;
          this.bidAmt = bidAmt;
      * @return Returns the bidAmt.
     public int getBidAmt() {
          return bidAmt;
      * @return Returns the buyer.
     public Buyer getBuyer() {
          return buyer;
     public void setTime(String time){
          this.time = time;
     public String getTime(){
          return time;
package taxsale.shared;
import java.io.Serializable;
* Created on May 26, 2005
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
* @author Admin
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
public class Buyer implements Serializable{
     private String name;
     private Integer id;
     private Boolean connected;
     private String cName;
     public Buyer(){
     public Buyer(String name, Integer id, String cName){
          this.name = name;
          this.id = id;
          this.cName = cName;
          this.connected = new Boolean(false);
      * @return Returns the id.
     public Integer getId() {
          return id;
      * @param clientId
     public void setId(Integer clientId) {
          id = clientId;
      * @return Returns the cName.
     public String getCName() {
          return cName;
      * @param name The cName to set.
     public void setCName(String name) {
          cName = name;
      * @return Returns the user.
     public String getName() {
          return name;
      * @param user The user to set.
     public void setName(String name) {
          this.name = name;
}Thanks