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Thread: Exception (payword protocol)

  1. #1
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    Unhappy Exception (payword protocol)

    Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
            at java.util.ArrayList.get(ArrayList.java:323)
            at payword.user.CertificateTableModel.getSelected(CertificateTableModel.java:61)
            at payword.user.ClientWindow.vendorConnectButtonActionPerformed(ClientWindow.java:373)
            at payword.user.ClientWindow.access$500(ClientWindow.java:23)
            at payword.user.ClientWindow$6.actionPerformed(ClientWindow.java:182)
            at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
            at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
            at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
            at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
            at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
            at java.awt.Component.processMouseEvent(Component.java:5517)
            at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
            at java.awt.Component.processEvent(Component.java:5282)
            at java.awt.Container.processEvent(Container.java:1966)
            at java.awt.Component.dispatchEventImpl(Component.java:3984)
            at java.awt.Container.dispatchEventImpl(Container.java:2024)
            at java.awt.Component.dispatchEvent(Component.java:3819)
            at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
            at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
            at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
            at java.awt.Container.dispatchEventImpl(Container.java:2010)
            at java.awt.Window.dispatchEventImpl(Window.java:1791)
            at java.awt.Component.dispatchEvent(Component.java:3819)
            at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
            at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
            at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
            at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
            at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
            at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

    any idea for this exception???



    This exception appears when i push "Connect" button for ports : 11201 (client-vendor connection) and 11202 (vendor-broker connection).

    The database is created by WampServer application..


  2. #2
    Administrator copeg's Avatar
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    Default Re: Exception (payword protocol)

    Without code posted we all have to rely on guesses. Here's my guess: you are accessing an ArrayList for index -1, which will throw an exception. Based upon the stack trace, I'd guess you are trying to get the selected row or column within a table - but there are none selected so the returned selected row is -1 (JTable (Java 2 Platform SE 5.0)). Again beyond that its anyone's guess...

  3. #3
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    Default Re: Exception (payword protocol)

    Quote Originally Posted by copeg View Post
    Without code posted we all have to rely on guesses. Here's my guess: you are accessing an ArrayList for index -1, which will throw an exception. Based upon the stack trace, I'd guess you are trying to get the selected row or column within a table - but there are none selected so the returned selected row is -1 (JTable (Java 2 Platform SE 5.0)). Again beyond that its anyone's guess...
    Client to Vendor Connection

    package payword.user;
     
    import payword.User;
    import java.io.ObjectInputStream;
    import java.io.ObjectOutputStream;
    import java.net.Socket;
    import payword.ClientCommitment;
     
    /**
     *
     * @author Thodoris
     */
    public class ClientToVendorConnection {
        private Socket socket;
        private String address;
        private int port;
        private ClientWindow parent;
        private ClientCommitment commitment;
        private User user;
     
        public ClientToVendorConnection(String address, int port, ClientWindow parent, ClientCommitment commitment, User user) {
            this.address = address;
            this.port = port;
            this.parent = parent;
            this.commitment = commitment;
            this.user = user;
     
            connect();
        }
     
     
        public void connect(){
            Thread t = new Thread(new Runnable() {
     
                public void run() {
                    try {
                        socket = new Socket(address, port);
                        parent.log("Connected to: " + address + ":" + port);
     
                        // Στέλνω το commitment για να γράψει ο vendor τα στοιχεία του
                        ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
                        out.writeObject(commitment);
                        out.flush();
     
                        // Παίρνω πίσω το commitment μαζί με τα στοιχεία του vendor και υπολογίζω την υπογραφή και το paychain
                        ObjectInputStream iin = new ObjectInputStream(socket.getInputStream());
                        commitment = (ClientCommitment)iin.readObject();
                        commitment.calculatePayChain(user.getUserPrivateKey());
     
                        commitment.setWRoot(null);
     
                        // Στέλνω στον έμπορο το τελικό commitment.
                        out.writeObject(commitment);
     
     
                        parent.log("User commitment sent.");
     
                        socket.close();
     
                    } catch (Exception ex) {
                        parent.log("ERROR: " + ex.getMessage());
                    } 
     
                }
            });
            t.run();
        }
     
     
    }


    Vendor to Client connection

    package payword.vendor;
     
    import java.io.IOException;
    import java.io.ObjectInputStream;
    import java.io.ObjectOutputStream;
    import java.net.ServerSocket;
    import java.net.Socket;
    import java.util.logging.Level;
    import java.util.logging.Logger;
    import payword.ClientCommitment;
     
    /**
     *
     * @author Thodoris
     */
    public class VendorToClientConnection {
        private VendorWindow parent;
        private ServerSocket serverSocket;
        private ClientCommitment commitment;
        private int port;
     
        public VendorToClientConnection(int port, VendorWindow parent, ClientCommitment commitment) {
            this.parent = parent;
            this.commitment = commitment;
            this.port = port;
        }
     
     
        public void startListening(){
            Thread thread = new Thread(new Runnable() {
                public void run() {
                    try {
                        serverSocket = new ServerSocket(port);
                        parent.log("VendorToClient: Start listening port " + port);
     
                    } catch (IOException ex) {
                        parent.log("ERROR: Could not start listening port: " + port);
                    }
     
                    try {
                        Socket socket = serverSocket.accept();
                        parent.log("Accepted connection.");
     
                        // Παίρνω το commitment και γράφω το vendorInfo
                        ObjectInputStream iin = new ObjectInputStream(socket.getInputStream());
                        ClientCommitment commitment = (ClientCommitment)iin.readObject();
                        parent.log("Commitment received.");
     
                        commitment.setVendorInfo("Vendor One");
                        // Στέλνω πίσω το commitment για να μπορέσει ο client να υπολογίσει το wRoot
                        ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
                        out.writeObject(commitment);
                        parent.log("Sent.");
     
                        commitment = (ClientCommitment)iin.readObject();
                        parent.log("Final commitment received.");
     
                        parent.log("vendorInfo: " + commitment.getVendorInfo());
                        parent.log("userInfo: " + commitment.getCertificate().getUserName());
                        parent.log("ammount: " + commitment.getAmmount());
     
                        parent.log("Vendor: Commitment received.");
     
                        VendorDbConnection con = new VendorDbConnection();
                        con.saveCommitment(commitment);
     
                        socket.close();
                    } catch (Exception ex) {
                        Logger.getLogger(VendorToClientConnection.class.getName()).log(Level.SEVERE, null, ex);
                    }
     
                }
            });
     
            thread.start();
        }
     
        public void disconnect(){
            try {
                serverSocket.close();
            } catch (IOException ex) {
                parent.log("ERROR: Could not disconnect.");
            }
        }
     
    }

    And this is the Certificate Table Model .. that comes the error

    package payword.user;
     
    import payword.User;
    import java.util.ArrayList;
    import java.util.List;
    import javax.swing.table.AbstractTableModel;
    import payword.ClientCertificate;
     
    /**
     *
     * @author Thodoris
     */
    public class CertificateTableModel extends AbstractTableModel {
        int lines = 0;
        List<ClientCertificate> contents = new ArrayList<ClientCertificate>();
     
        public void refreshTable(User user){
            ClientDbConnection connection = new ClientDbConnection();
            contents = connection.getCertificateList(user);
            lines = contents.size();
            fireTableDataChanged();
            connection.close();
        }
     
        public int getRowCount() {
            return lines;
        }
     
        public int getColumnCount() {
            return 3;
        }
     
        public Object getValueAt(int rowIndex, int columnIndex) {
            ClientCertificate cert = contents.get(rowIndex);
            if(columnIndex == 0){
                return cert.getUserName();
            }else if(columnIndex == 1){
                return cert.getExpirationDate();
            }else{
                return cert.getAmmount();
            }
        }
     
        @Override
        public String getColumnName(int column){
            if(column == 0){
                return "Broker";
            }else if(column==1){
                return "Expires";
            }else{
                return "Ammount";
            }
        }
     
        public ClientCertificate getSelected(int i){
            return contents.get(i);
        }
    }
    Last edited by ThodorisVon; January 26th, 2010 at 04:47 PM.

  4. #4
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    Default Re: Exception (payword protocol)

    The exception is being thrown in the ClientWindow vendorConnectButtonActionPerformed() method, please post that code.

  5. #5
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    Default Re: Exception (payword protocol)

    here you are..

    private void vendorConnectButtonActionPerformed(java.awt.event.ActionEvent evt) {                                                    
            int port = Integer.parseInt(portTf1.getText());
     
            int amount = (Integer)amountSpinner.getValue();
     
            int i = certificateTable.getSelectedRow();
            CertificateTableModel model = (CertificateTableModel)certificateTable.getModel();
     
            ClientCommitment commitment = new ClientCommitment(model.getSelected(i), new Date(), "", amount);
     
            vendorConnection = new ClientToVendorConnection(addressTf1.getText(), port, this, commitment, user);

  6. #6
    Administrator copeg's Avatar
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    Default Re: Exception (payword protocol)

    And here I thought you may have actually taken my first suggestion...Read the API for getSelectedRow() JTable (Java 2 Platform SE 5.0)
     int i = certificateTable.getSelectedRow();
    i will be -1 if there are no rows selected, and you cannot access an ArrayList index at -1 in the following line of code
    model.getSelected(-1) ///will throw an exception

    Fix is to make sure i is within the bounds of your list
    Last edited by copeg; January 27th, 2010 at 12:23 PM.

  7. #7
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    Default Re: Exception (payword protocol)

    ill give it a try
    tnx for your help copeg!

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