Having a problem with this code

a buddy of mine is teaching me some java, and im doing ap roject in which i have to set up a loop that will take an inputed script a b c or d, and convert it to a price, then add up the prices together, using up to 10 variables, this is what i got so far and im having trouble finishing it, also getting errors on the lines with total, any help would be appreciated
package projectloop;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
String input = new String();
Scanner in = new Scanner(System.in);
for(int i=0;i<10;i++){
System.out.println("item");
String s = in.next();
if(s.equals("a"))total=9.95;
if(s.equals("b"))total[i]=19.95;
if(s.equals("c"))total[i]=29.95;
if(s.equals("d"))total[i]=39.95;

Comments embedded
themanofstainlesssteel wrote:
package projectloop;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
String input = new String(); // You never use the "input" String reference variable
Scanner in = new Scanner(System.in);
for(int i=0;i<10;i++){
System.out.println("item");
String s = in.next();
if(s.equals("a"))total=9.95; // you never declared the "total" array
if(s.equals("b"))total[i]=19.95;
if(s.equals("c"))total[i]=29.95;
if(s.equals("d"))total[i]=39.95;
You never do any addition.
I also recommend using prices in cents.

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    dr1.setClosedIcon(i1);
    dr1.setOpenIcon(i2);
    dr1.setLeafIcon(i3);
    dr1.setTextSelectionColor(java.awt.Color.red);
    tree.setCellRenderer(dr1);
    //add received files to the list
    private void addtoList(Hashtable rfiles)
    Enumeration filelist=rfiles.keys();          
    while(filelist.hasMoreElements())          
    File file=(File)filelist.nextElement();
    this.rfiles.put(file,rfiles.get(file));               
    //show the attachments received               
    private void showattach(Hashtable rfiles)
    Enumeration filelist=rfiles.keys();
    dsource=DragSource.getDefaultDragSource();
    JButton b1=null;
    while(filelist.hasMoreElements())
         File file=(File)filelist.nextElement();
         Icon icon=chooser.getIcon(file);
         b1=new JButton(icon);
         b1.setBackground(java.awt.Color.gray);
    b1.setToolTipText(file.getName());
    b1.addMouseListener(new AttachmentHandler());
    Dimension d1=new Dimension(icon.getIconWidth(),icon.getIconHeight());
    b1.setMaximumSize(d1);
    hfiles.put(b1,file);
    textpanel.setCaretPosition(doc.getLength());
    textpanel.insertComponent(b1);
    b1.setSize(icon.getIconWidth(),icon.getIconHeight());
    dsource.createDefaultDragGestureRecognizer(b1, DnDConstants.ACTION_COPY_OR_MOVE,new DragGestureHandler());           
    cp.repaint();
    private void savefile(File file,Object parent)
    //ExtensionFileFilter filter = new ExtensionFileFilter(false);
    //filter.addExtension("txt",true);
    //chooser.setFileFilter(filter);
    int returnVal = chooser.showSaveDialog(client);
    if(returnVal ==JFileChooser.APPROVE_OPTION)
         try{
         FileOutputStream fstream=new FileOutputStream(chooser.getSelectedFile());
         //decide whether the file received or sent is to be saved
         if(((Container)parent).equals(textArea1))
         fstream.write((byte[])files.get(file));
         else
         fstream.write((byte[])rfiles.get(file));
         fstream.close();
         System.out.println(file.getName());          
         catch(Exception e)
         {System.out.println(e.toString()); }
    private void openfile(File file,Object parent)
         File tempfile=null;
         try{
         String fname=file.getName();     
         tempfile=File.createTempFile("temp",fname.substring(fname.lastIndexOf(".")));     
         FileOutputStream fstream=new FileOutputStream(tempfile);
         System.out.println(tempfile.getAbsolutePath());
         //decide whether the file received or sent is to be saved
         if(((Container)parent).equals(textArea1))
         fstream.write((byte[])files.get(file));
         else
         fstream.write((byte[])rfiles.get(file));          
         fstream.close();
    catch(Exception e){System.out.println(e.toString());}
    try{
         Process p1=r1.exec("cmd /c start " + tempfile.getAbsolutePath());
         p1.waitFor();
    catch(Exception e){System.out.println(e.toString());}     
    //inner classes
    class ComponentHandler implements ContainerListener{
    public void componentRemoved(ContainerEvent ev)     
              Container cont=(Container)ev.getChild();
              if(cont.getComponentCount()>0)
              JButton but=(JButton)cont.getComponent(0);
              files.remove((File)hfiles.get(but));
              hfiles.remove(but);
    public void componentAdded(ContainerEvent ev){}
    class AttachmentHandler extends MouseAdapter{
         public void mouseClicked(MouseEvent ev){
         if(ev.getModifiers()==4)
         Component comp=(Component)ev.getSource();
         File file=(File)hfiles.get(comp);
         popup=new JPopupMenu();
         JMenuItem popopen=new JMenuItem("Open");
         JMenuItem popsave=new JMenuItem("Save As..");
         popup.add(popopen);
         System.out.println(comp.getParent().getParent().getClass().toString());
         popopen.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
         popup.add(popsave);
         popsave.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
         popup.show(comp,12,12);
    class DragGestureHandler extends Vector implements DragGestureListener,DragSourceListener,Transferable{
    final static int FILE = 0;
    final static int STRING = 1;
    final static int PLAIN = 2;
    DataFlavor flavors[] = {DataFlavor.javaFileListFlavor,DataFlavor.stringFlavor,DataFlavor.plainTextFlavor};
    public void dragDropEnd(DragSourceDropEvent ev){}
    public void dragEnter(DragSourceDragEvent ev){}
    public void dragExit(DragSourceEvent ev){}
    public void dragOver(DragSourceDragEvent ev){}
    public void dropActionChanged(DragSourceDragEvent ev){}
    public void dragGestureRecognized(DragGestureEvent ev)     
              System.out.println("recognized");
              File file=(File)hfiles.get(ev.getComponent());
    addElement(file);
    ev.startDrag(DragSource.DefaultCopyDrop,this,this);
    /* Returns the array of flavors in which it can provide the data. */
    public synchronized DataFlavor[] getTransferDataFlavors() {
         return flavors;
    /* Returns whether the requested flavor is supported by this object. */
    public boolean isDataFlavorSupported(DataFlavor flavor) {
    boolean b = false;
    b |=flavor.equals(flavors[FILE]);
    b |= flavor.equals(flavors[STRING]);
    b |= flavor.equals(flavors[PLAIN]);
         return (b);
    public synchronized Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException,IOException
    if(flavor.equals(flavors[FILE])){return this;}
    else if (flavor.equals(flavors[PLAIN])) {
         return new StringReader(((File)elementAt(0)).getAbsolutePath());
         } else if (flavor.equals(flavors[STRING])) {
         return((File)elementAt(0)).getAbsolutePath();
         } else {
         throw new UnsupportedFlavorException(flavor);
    //inner class for draging in the files on java frame     
    class DragDropHandler implements DropTargetListener{
    public void dragEnter(DropTargetDragEvent ev){     
    public void dragExit(DropTargetEvent ev){
    public void dragOver(DropTargetDragEvent ev){
    public void drop(DropTargetDropEvent ev){
         Transferable tf1=ev.getTransferable();
         DataFlavor fl[]=ev.getCurrentDataFlavors();
         if(ev.isDataFlavorSupported(DataFlavor.javaFileListFlavor))
         ev.acceptDrop (DnDConstants.ACTION_COPY_OR_MOVE);
         try{
         java.util.List fileList = (java.util.List)tf1.getTransferData(DataFlavor.javaFileListFlavor);
    Iterator iterator = fileList.iterator();
    while (iterator.hasNext())
    File file = (File)iterator.next();
    if(file.isFile())
    Icon icon=chooser.getIcon(file);
    FileInputStream fstream=new FileInputStream(file);
    int filedata=(new Double(file.length())).intValue();
    byte bytes[]=new byte[filedata];
    fstream.read(bytes);
    files.put(file,bytes);
    ev.getDropTargetContext().dropComplete(true);
    addAttach(fileList);
    catch(Exception e)
    {System.out.println(e.toString() + "here");}
    public void dropActionChanged(DropTargetDragEvent ev){
    class MouseHandler extends MouseAdapter{
    public void mouseClicked(MouseEvent me)
    TreePath tp=tree.getPathForLocation(me.getX(),me.getY());
    if(tp!=null)
         if(tp.getPathCount()==3)
              toalias=tp.getPathComponent(2).toString();
              togroup=tp.getPathComponent(1).toString();
              System.out.println(toalias);
              if (!(toalias.equals(fromalias) && togroup.equals(fromgroup)))
              System.out.println("hh " + toalias);
              label4.setText(tp.getPathComponent(2).toString() + "_@" + tp.getPathComponent(1).toString());           
    class ButtonHandler implements ActionListener{
         private File file;
         private Object parent;
         //constructors
         public ButtonHandler()
         public ButtonHandler(File file,Object parent)
              this.file=file;
              this.parent=parent;
         //other functions      
         public void actionPerformed(ActionEvent ev){
              String s=ev.getActionCommand();
         System.out.println(s);
              if(s.equals("Send with Audio..."))
              //Audio audio=new Audio(client,false,"CAPTURE");          
              if(s.equals("Disconnect"))
              try{
              // server.disconnect(client);
              client.getSound(3);
              cp.remove(jsp);
              label6.setVisible(false);
              //UnicastRemoteObject.unexportObject(client,true);
              button3.setLabel("Connect");
              textArea2.append("\nYou have been disconnected to Server");
              client.repaint();     
              catch(Exception e)
              System.out.println(e.toString());
              if(s.equals("Connect"))
         //     clp=new ClientProperties(client,false);
         if(s.equals("Save As.."))
         savefile(file,parent);     
         if(s.equals("Open"))
         openfile(file,parent);
              if(s.equals("Attach"))
              //ExtensionFileFilter filter = new ExtensionFileFilter(false);
              //filter.addExtension(".txt",true);
              //filter.setDescription("Text Files(.txt)");
              // chooser.setFileFilter(filter);
              chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
              //chooser.setMultiSelectionEnabled(true);
              int returnVal = chooser.showOpenDialog(client);
              if(returnVal ==JFileChooser.APPROVE_OPTION)
              //File fp[]=chooser.getSelectedFiles();
              File fp[]=new File[1];
              fp[0]=chooser.getSelectedFile();
              int i=0;
              while(i<fp.length)
              try{
              File file=fp;
              Icon icon=chooser.getIcon(file);
    FileInputStream fstream=new FileInputStream(file);
    int filedata=(new Double(file.length())).intValue();
    byte bytes[]=new byte[filedata];
    fstream.read(bytes);
    files.put(file,bytes);
    catch(Exception e){dialog.showMessageDialog(client,e.toString(),"Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
    return; }
    i++;
              java.util.List fileList=Arrays.asList(fp);
              addAttach(fileList);
              if(s.equals("Send"))
              try{
                   if(toalias==null)
                   dialog.showMessageDialog(client,"Select the Recepient First!!","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
                   return;
                   if(toalias!=null && togroup!=null && (!toalias.equals(fromalias)))
                   // server.sendMessage(textArea1.getText(),files,toalias,togroup,fromalias,fromgroup);
                   textArea1.setText("");
              catch(Exception e)
         e.printStackTrace();
    }//if ends
    class WindowEventHandler extends WindowAdapter{
         public void windowClosing(WindowEvent ev){
              try{
              //server.disconnect(client);
              client.getSound(3);
         //     UnicastRemoteObject.unexportObject(client,true);
              catch(Exception e){System.out.println(e.toString());}
              dispose();
    private class onshutdown extends Thread{
    public void run(){
         try{
              //server.disconnect(client);
              //UnicastRemoteObject.unexportObject(client,true);
              catch(Exception e){}      
    }//run ends          

    Here is the working code :
    There was an error line 724
    File file=fp; -> File file=fp[0];
    Several method were deprecated and try to replace the deprecated static field : DataFlavor.plainTextFlavor which was deprecated since 1.4.
    /* Client.java*/
    import java.util.*;
    import java.awt.*;
    import java.awt.event.*;
    import java.rmi.*;
    import java.rmi.server.*;
    import javax.swing.*;
    import javax.swing.tree.*;
    import javax.swing.filechooser.*;
    import java.io.*;
    import java.awt.dnd.*;
    import java.awt.datatransfer.*;
    import javax.swing.plaf.*;
    import javax.swing.plaf.basic.*;
    import javax.swing.text.*;
    import javax.swing.event.*;
    public class Client extends JFrame{
    static String newline = System.getProperty("line.separator");
    static Client client;
    //ServerInterface server;
    //ClientProperties clp;
    Vector v1=new Vector();
    ByteArrayOutputStream out;
    Runtime r1;
    //file objects,together with array of bytes
    Hashtable files=new Hashtable(); //files sent
    Hashtable rfiles=new Hashtable(); //files received
    //file objects,together with button handlers
    Hashtable hfiles=new Hashtable(); //files sent,files received
    JButton button1=new JButton();
    JButton button2=new JButton();
    JButton button3=new JButton();
    JLabel label1=new JLabel();
    JLabel label2=new JLabel();
    JLabel label3=new JLabel();
    JLabel label4=new JLabel();
    JLabel label5=new JLabel();
    JLabel label6=new JLabel();
    JLabel label7=new JLabel();
    JLabel label8=new JLabel();
    JOptionPane dialog=new JOptionPane();
    JFileChooser chooser = new JFileChooser();
    JPanel panel1;
    JPanel panel2;
    DropTarget dtarget;
    DragSource dsource;
    JTextPane textArea1=new JTextPane();
    TextArea textArea2=new TextArea();
    JTextPane textpanel=new JTextPane();
    Style defstyle,style;
    StyledDocument doc,doc1;
    JPopupMenu popup;
    JTree tree;
    JScrollPane jsppane;
    JScrollPane jsp,jsp2;
    DefaultMutableTreeNode top;
    Container cp;
    private String toalias;
    private String togroup;
    private String fromalias;
    private String fromgroup;
    private boolean CONNECT;
    public Client()
    cp=getContentPane();
    cp.setLayout(null);
    setForeground(java.awt.Color.red);
    setFont(new Font("Dialog", Font.PLAIN, 14));
    setVisible(false);
    label1.setText(" CHAT APPLICATION");
    cp.add(label1);
    label1.setFont(new Font("Dialog", Font.BOLD, 16));
    label1.setBounds(72,20,319,30);
    label2.setText("List of Users Connected.");
    cp.add(label2);
    label2.setForeground(java.awt.Color.blue);
    label2.setFont(new Font("Dialog", Font.BOLD, 12));
    label2.setBounds(24,60,192,26);
    label8.setBounds(280,60,100,26);
    cp.add(label8);
    cp.add(textArea2);
    textArea2.setBounds(204,120,268,90);
    jsppane=new JScrollPane(textArea1);
    doc1=textArea1.getStyledDocument();
    jsppane.setBounds(12,264,456,109);
    cp.add(jsppane);
    label3.setText("TO::");
    cp.add(label3);
    label3.setFont(new Font("Dialog", Font.BOLD, 12));
    label3.setBounds(12,228,36,20);
    cp.add(label4);
    label4.setBackground(java.awt.Color.lightGray);
    label4.setBounds(60,228,172,19);
    label5.setText("SERVER RESPONSE");
    cp.add(label5);
    label5.setFont(new Font("Dialog", Font.BOLD, 12));
    label5.setBounds(204,96,204,21);
    label7.setText("MESSAGE FOR YOU.");
    cp.add(label7);
    label7.setFont(new Font("Dialog", Font.BOLD, 14));
    label7.setBounds(12,371,288,25);
    jsp2=new JScrollPane(textpanel);
    setTextPaneStyle();
    jsp2.setBounds(12,401,456,109);
    cp.add(jsp2);
    button1.setText("Send");
    button1.setEnabled(false);
    cp.add(button1);
    button1.setBackground(java.awt.Color.lightGray);
    button1.setForeground(java.awt.Color.black);
    button1.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
    button1.setBounds(60,520,78,36);
    button2.setText("Attach");
    //button2.setEnabled(false);
    cp.add(button2);
    button2.setBackground(java.awt.Color.lightGray);
    button2.setForeground(java.awt.Color.black);
    button2.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
    button2.setBounds(180,520,72,36);
    button3.setText("Connect");
    cp.add(button3);
    button3.setBackground(java.awt.Color.lightGray);
    button3.setForeground(java.awt.Color.black);
    button3.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
    button3.setBounds(288,520,72,33);
    setSize(500,620);
    show();
    addWindowListener(new WindowEventHandler());
    button1.addActionListener(new ButtonHandler());
    button2.addActionListener(new ButtonHandler());
    button3.addActionListener(new ButtonHandler());
    textArea1.addContainerListener(new ComponentHandler());
    dtarget=new DropTarget(textArea1,new DragDropHandler());
    textArea2.setEnabled(false);
    textpanel.setEnabled(false);
    r1=Runtime.getRuntime();
    r1.addShutdownHook(new onshutdown());
    addMenu();
    cp.repaint();
    //adds attachments to the textArea1
    synchronized private void addAttach(java.util.List fileList)
    Iterator iterator=fileList.iterator();
    JButton bw;
    while(iterator.hasNext())
    File file=(File)iterator.next();
    Icon icon=chooser.getIcon(file);
    bw=new JButton(icon);
    bw.setBackground(java.awt.Color.gray);
    bw.setToolTipText(file.getAbsolutePath());
    bw.addMouseListener(new AttachmentHandler());
    Dimension d1=new Dimension(icon.getIconWidth(),icon.getIconHeight());
    bw.setMaximumSize(d1);
    hfiles.put(bw,file);
    textArea1.insertComponent(bw);
    textArea1.setCaretPosition(doc1.getLength());
    bw.setSize(icon.getIconWidth(),icon.getIconHeight());
    //only one file at a time
    break;
    cp.repaint();
    public void setAudioStream(ByteArrayOutputStream out)
    this.out=out;
    private void addMenu()
    JMenuBar mbar=new JMenuBar();
    mbar.setVisible(true);
    mbar.setBounds(0,0,500,20);
    mbar.setBackground(java.awt.Color.gray);
    //first menu
    JMenu m1=new JMenu("Connection");
    m1.setBounds(0,0,80,20);
    m1.setBackground(java.awt.Color.gray);
    JMenuItem mitem1=new JMenuItem("Connect");
    JMenuItem mitem2=new JMenuItem("Disconnect");
    m1.add(mitem1);
    m1.add(mitem2);
    mitem1.addActionListener(new ButtonHandler());
    mitem2.addActionListener(new ButtonHandler());
    mbar.add(m1);
    //second menu
    JMenu m2=new JMenu("Send...");
    m2.setBounds(90,0,80,20);
    m2.setBackground(java.awt.Color.gray);
    JMenuItem mitem3=new JMenuItem("Send");
    JMenuItem mitem4=new JMenuItem("Send with Audio...");
    mitem3.addActionListener(new ButtonHandler());
    mitem4.addActionListener(new ButtonHandler());
    m2.add(mitem3);
    m2.add(mitem4);
    mbar.add(m2);
    cp.add(mbar);
    private void setTextPaneStyle()
    StyleContext stylecontext =StyleContext.getDefaultStyleContext();
    defstyle=stylecontext.getStyle(StyleContext.DEFAULT_STYLE);
    doc= textpanel.getStyledDocument();
    //style 1
    style= textpanel.addStyle("bold",defstyle);
    StyleConstants.setBackground(style,Color.white);
    StyleConstants.setForeground(style,Color.blue);
    StyleConstants.setItalic(style, false);
    StyleConstants.setBold(style, true);
    StyleConstants.setFontSize(style,16);
    //style 2
    style= textpanel.addStyle("normal",defstyle);
    StyleConstants.setBackground(style,Color.white);
    StyleConstants.setForeground(style,Color.black);
    StyleConstants.setItalic(style, false);
    StyleConstants.setBold(style, false);
    StyleConstants.setFontSize(style,14);
    //style3
    style= textpanel.addStyle("attach",defstyle);
    StyleConstants.setBackground(style,Color.white);
    StyleConstants.setForeground(style,Color.red);
    StyleConstants.setItalic(style, true);
    StyleConstants.setBold(style, false);
    StyleConstants.setFontSize(style,12);
    //remote method called by server
    public void addClient(String alias,String group,JTree tree)
    //if old client remove old tree
    if(!alias.equals(""))
    cp.remove(this.jsp);
    //add new tree
    this.tree=tree;
    setTreeModel();
    getSound(2);
    if(!alias.equals(""))
    textArea2.append("\nNew Client:" + alias + "has joined");
    else
    textArea2.append("\nYou have been connected to the Server.");
    jsp=new JScrollPane(this.tree);
    jsp.setBounds(12,96,168,120);
    jsp.setBackground(java.awt.Color.lightGray);
    cp.add(jsp);
    this.tree.addMouseListener(new MouseHandler());
    //remote method called by server
    public void sendMessage(String str,Hashtable rfiles,String alias,String group) throws RemoteException
    receiveMessage(str,rfiles,alias,group);
    //remote method called by server
    public void removeClient(JTree tree,String alias,String group) throws RemoteException
    cp.remove(this.jsp);
    this.tree=tree;
    setTreeModel();
    getSound(3);
    jsp=new JScrollPane(this.tree);
    jsp.setBounds(12,96,168,120);
    jsp.setBackground(java.awt.Color.lightGray);
    cp.add(jsp);
    this.tree.addMouseListener(new MouseHandler());
    textArea2.append("\nClient:" + alias + "has disconnected");
    private void receiveMessage(String str,Hashtable rfiles,String alias,String group)
    boolean flag=true;
    UIManager.put("JFrame.activeTitleBackground", new Color(64,128,255));
    UIManager.put("JFrame.activeTitleForeground", Color.white);
    UIManager.put("JFrame.inactiveTitleBackground", new Color(128,128,128));
    UIManager.put("JFrame.inactiveTitleForeground", Color.black);
    SwingUtilities.updateComponentTreeUI(this);
    try{
    if(alias.equals(""))
    doc.insertString(doc.getLength(),"CHATMASTER>>",textpanel.getStyle("bold"));
    doc.insertString(doc.getLength(),str+ newline,textpanel.getStyle("normal"));
    else
    doc.insertString(doc.getLength(),alias + "@" + group + ">>",textpanel.getStyle("bold"));
    doc.insertString(doc.getLength(),str,textpanel.getStyle("normal"));
    //add files to textpanel
    if(rfiles!=null && rfiles.size()>0)
    doc.insertString(doc.getLength(),newline+"Attachments>>",textpanel.getStyle("attach"));
    showattach(rfiles);
    addtoList(rfiles);
    doc.insertString(doc.getLength(),newline,textpanel.getStyle("normal"));
    catch(Exception e)
    e.printStackTrace();
    dialog.showMessageDialog(client,e.toString(),"Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
    cp.repaint();
    protected boolean ContactServer(String alias,String servername,String group)
    try{
    //UnicastRemoteObject.exportObject(this);
    //server=(ServerInterface)Naming.lookup("//gpt02d05:5500/" + servername);
    // server.notifyMe(this,alias,group);
    //change the settings of buttons
    button1.setEnabled(true);
    button2.setEnabled(true);
    button3.setText("Disconnect");
    label8.setVisible(true);
    label8.setText(" Welcome::" + alias);
    //putting values of alias and group for sending messages
    fromalias=alias;
    fromgroup=group;
    CONNECT=true;
    return true;
    catch(UnsupportedOperationException e)
    dialog.showMessageDialog(client,"Client with the Same Alias in " + group + " already exists","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
    try{
    // UnicastRemoteObject.unexportObject(client,true);
    catch(Exception ev){System.out.println(ev.toString());}
    catch(Exception e)
    dialog.showMessageDialog(client,"Unable to connect to Server","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
    try{
    // UnicastRemoteObject.unexportObject(client,true);
    catch(Exception ev){System.out.println(ev.toString());}
    return false;
    public static void main(String args[]) throws RemoteException{
    client=new Client();
    }//main ends
    public void getSound(int count)
    Toolkit t1=getToolkit();
    for(int i=0;i<count;i++)
    t1.beep();
    try{
    Thread.sleep(500);
    catch(Exception e){}
    public void setTreeModel()
    ImageIcon i1=new ImageIcon("Lock.gif","No Users");
    ImageIcon i2=new ImageIcon("Connec.gif","Users in Group");
    ImageIcon i3=new ImageIcon("authorbn.gif","An User");
    DefaultTreeCellRenderer dr1= new DefaultTreeCellRenderer();
    dr1.setClosedIcon(i1);
    dr1.setOpenIcon(i2);
    dr1.setLeafIcon(i3);
    dr1.setTextSelectionColor(java.awt.Color.red);
    tree.setCellRenderer(dr1);
    //add received files to the list
    private void addtoList(Hashtable rfiles)
    Enumeration filelist=rfiles.keys();
    while(filelist.hasMoreElements())
    File file=(File)filelist.nextElement();
    this.rfiles.put(file,rfiles.get(file));
    //show the attachments received
    private void showattach(Hashtable rfiles)
    Enumeration filelist=rfiles.keys();
    dsource=DragSource.getDefaultDragSource();
    JButton b1=null;
    while(filelist.hasMoreElements())
    File file=(File)filelist.nextElement();
    Icon icon=chooser.getIcon(file);
    b1=new JButton(icon);
    b1.setBackground(java.awt.Color.gray);
    b1.setToolTipText(file.getName());
    b1.addMouseListener(new AttachmentHandler());
    Dimension d1=new Dimension(icon.getIconWidth(),icon.getIconHeight());
    b1.setMaximumSize(d1);
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    textpanel.setCaretPosition(doc.getLength());
    textpanel.insertComponent(b1);
    b1.setSize(icon.getIconWidth(),icon.getIconHeight());
    dsource.createDefaultDragGestureRecognizer(b1, DnDConstants.ACTION_COPY_OR_MOVE,new DragGestureHandler());
    cp.repaint();
    private void savefile(File file,Object parent)
    //ExtensionFileFilter filter = new ExtensionFileFilter(false);
    //filter.addExtension("txt",true);
    //chooser.setFileFilter(filter);
    int returnVal = chooser.showSaveDialog(client);
    if(returnVal ==JFileChooser.APPROVE_OPTION)
    try{
    FileOutputStream fstream=new FileOutputStream(chooser.getSelectedFile());
    //decide whether the file received or sent is to be saved
    if(((Container)parent).equals(textArea1))
    fstream.write((byte[])files.get(file));
    else
    fstream.write((byte[])rfiles.get(file));
    fstream.close();
    System.out.println(file.getName());
    catch(Exception e)
    {System.out.println(e.toString()); }
    private void openfile(File file,Object parent)
    File tempfile=null;
    try{
    String fname=file.getName();
    tempfile=File.createTempFile("temp",fname.substring(fname.lastIndexOf(".")));
    FileOutputStream fstream=new FileOutputStream(tempfile);
    System.out.println(tempfile.getAbsolutePath());
    //decide whether the file received or sent is to be saved
    if(((Container)parent).equals(textArea1))
    fstream.write((byte[])files.get(file));
    else
    fstream.write((byte[])rfiles.get(file));
    fstream.close();
    catch(Exception e){System.out.println(e.toString());}
    try{
    Process p1=r1.exec("cmd /c start " + tempfile.getAbsolutePath());
    p1.waitFor();
    catch(Exception e){System.out.println(e.toString());}
    //inner classes
    class ComponentHandler implements ContainerListener{
    public void componentRemoved(ContainerEvent ev)
    Container cont=(Container)ev.getChild();
    if(cont.getComponentCount()>0)
    JButton but=(JButton)cont.getComponent(0);
    files.remove((File)hfiles.get(but));
    hfiles.remove(but);
    public void componentAdded(ContainerEvent ev){}
    class AttachmentHandler extends MouseAdapter{
    public void mouseClicked(MouseEvent ev){
    if(ev.getModifiers()==4)
    Component comp=(Component)ev.getSource();
    File file=(File)hfiles.get(comp);
    popup=new JPopupMenu();
    JMenuItem popopen=new JMenuItem("Open");
    JMenuItem popsave=new JMenuItem("Save As..");
    popup.add(popopen);
    System.out.println(comp.getParent().getParent().getClass().toString());
    popopen.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
    popup.add(popsave);
    popsave.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
    popup.show(comp,12,12);
    class DragGestureHandler extends Vector implements DragGestureListener,DragSourceListener,Transferable{
    final static int FILE = 0;
    final static int STRING = 1;
    final static int PLAIN = 2;
    DataFlavor flavors[] = {DataFlavor.javaFileListFlavor,DataFlavor.stringFlavor,DataFlavor.plainTextFlavor};
    public void dragDropEnd(DragSourceDropEvent ev){}
    public void dragEnter(DragSourceDragEvent ev){}
    public void dragExit(DragSourceEvent ev){}
    public void dragOver(DragSourceDragEvent ev){}
    public void dropActionChanged(DragSourceDragEvent ev){}
    public void dragGestureRecognized(DragGestureEvent ev)
    System.out.println("recognized");
    File file=(File)hfiles.get(ev.getComponent());
    addElement(file);
    ev.startDrag(DragSource.DefaultCopyDrop,this,this);
    /* Returns the array of flavors in which it can provide the data. */
    public synchronized DataFlavor[] getTransferDataFlavors() {
    return flavors;
    /* Returns whether the requested flavor is supported by this object. */
    public boolean isDataFlavorSupported(DataFlavor flavor) {
    boolean b = false;
    b |=flavor.equals(flavors[FILE]);
    b |= flavor.equals(flavors[STRING]);
    b |= flavor.equals(flavors[PLAIN]);
    return (b);
    public synchronized Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException,IOException
    if(flavor.equals(flavors[FILE])){return this;}
    else if (flavor.equals(flavors[PLAIN])) {
    return new StringReader(((File)elementAt(0)).getAbsolutePath());
    } else if (flavor.equals(flavors[STRING])) {
    return((File)elementAt(0)).getAbsolutePath();
    } else {
    throw new UnsupportedFlavorException(flavor);
    //inner class for draging in the files on java frame
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    public void dragEnter(DropTargetDragEvent ev){
    public void dragExit(DropTargetEvent ev){
    public void dragOver(DropTargetDragEvent ev){
    public void drop(DropTargetDropEvent ev){
    Transferable tf1=ev.getTransferable();
    DataFlavor fl[]=ev.getCurrentDataFlavors();
    if(ev.isDataFlavorSupported(DataFlavor.javaFileListFlavor))
    ev.acceptDrop (DnDConstants.ACTION_COPY_OR_MOVE);
    try{
    java.util.List fileList = (java.util.List)tf1.getTransferData(DataFlavor.javaFileListFlavor);
    Iterator iterator = fileList.iterator();
    while (iterator.hasNext())
    File file = (File)iterator.next();
    if(file.isFile())
    Icon icon=chooser.getIcon(file);
    FileInputStream fstream=new FileInputStream(file);
    int filedata=(new Double(file.length())).intValue();
    byte bytes[]=new byte[filedata];
    fstream.read(bytes);
    files.put(file,bytes);
    ev.getDropTargetContext().dropComplete(true);
    addAttach(fileList);
    catch(Exception e)
    {System.out.println(e.toString() + "here");}
    public void dropActionChanged(DropTargetDragEvent ev){
    class MouseHandler extends MouseAdapter{
    public void mouseClicked(MouseEvent me)
    TreePath tp=tree.getPathForLocation(me.getX(),me.getY());
    if(tp!=null)
    if(tp.getPathCount()==3)
    toalias=tp.getPathComponent(2).toString();
    togroup=tp.getPathComponent(1).toString();
    System.out.println(toalias);
    if (!(toalias.equals(fromalias) && togroup.equals(fromgroup)))
    System.out.println("hh " + toalias);
    label4.setText(tp.getPathComponent(2).toString() + "_@" + tp.getPathComponent(1).toString());
    class ButtonHandler implements ActionListener{
    private File file;
    private Object parent;
    //constructors
    public ButtonHandler()
    public ButtonHandler(File file,Object parent)
    this.file=file;
    this.parent=parent;
    //other functions
    public void actionPerformed(ActionEvent ev){
    String s=ev.getActionCommand();
    System.out.println(s);
    if(s.equals("Send with Audio..."))
    //Audio audio=new Audio(client,false,"CAPTURE");
    if(s.equals("Disconnect"))
    try{
    // server.disconnect(client);
    client.getSound(3);
    cp.remove(jsp);
    label6.setVisible(false);
    //UnicastRemoteObject.unexportObject(client,true);
    button3.setText("Connect");
    textArea2.append("\nYou have been disconnected to Server");
    client.repaint();
    catch(Exception e)
    System.out.println(e.toString());
    if(s.equals("Connect"))
    // clp=new ClientProperties(client,false);
    if(s.equals("Save As.."))
    savefile(file,parent);
    if(s.equals("Open"))
    openfile(file,parent);
    if(s.equals("Attach"))
    //ExtensionFileFilter filter = new ExtensionFileFilter(false);
    //filter.addExtension(".txt",true);
    //filter.setDescription("Text Files(.txt)");
    // chooser.setFileFilter(filter);
    chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
    //chooser.setMultiSelectionEnabled(true);
    int returnVal = chooser.showOpenDialog(client);
    if(returnVal ==JFileChooser.APPROVE_OPTION)
    //File fp[]=chooser.getSelectedFiles();
    File fp[]=new File[1];
    fp[0]=chooser.getSelectedFile();
    int i=0;
    while(i<fp.length)
    try{
    File file=fp[0];
    Icon icon=chooser.getIcon(file);
    FileInputStream fstream=new FileInputStream(file);
    int filedata=(new Double(file.length())).intValue();
    byte bytes[]=new byte[filedata];
    fstream.read(bytes);
    files.put(file,bytes);
    catch(Exception e){dialog.showMessageDialog(client,e.toString(),"Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
    return; }
    i++;
    java.util.List fileList=Arrays.asList(fp);
    addAttach(fileList);
    if(s.equals("Send"))
    try{
    if(toalias==null)
    dialog.showMessageDialog(client,"Select the Recepient First!!","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
    return;
    if(toalias!=null && togroup!=null && (!toalias.equals(fromalias)))
    // server.sendMessage(textArea1.getText(),files,toalias,togroup,fromalias,fromgroup);
    textArea1.setText("");
    catch(Exception e)
    e.printStackTrace();
    }//if ends
    class WindowEventHandler extends WindowAdapter{
    public void windowClosing(WindowEvent ev){
    try{
    //server.disconnect(client);
    client.getSound(3);
    // UnicastRemoteObject.unexportObject(client,true);
    catch(Exception e){System.out.println(e.toString());}
    dispose();
    private class onshutdown extends Thread{
    public void run(){
    try{
    //server.disconnect(client);
    //UnicastRemoteObject.unexportObject(client,true);
    catch(Exception e){}
    }//run ends
    I hope this helps,
    Denis

  • Problem with this code...please help

    The following code is what I've written for a routing system.
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    How I integrate them into my array is on of the problems that I'm encountering.
    This class accepts food from the Machine class, asks the machine to check the size of the first queue, then adds the food to the shortest queue (via the Machine class).
    In the simulation food is being given to the packing machine which contains the shortest queue.
    package routingSystem;
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    //attributes.
    private int numberOfMachines = 2; //length of array.
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    //these in the code ?????
    //Constructor.
    public Router() {
    Machine machineArray[] = new Machine[numberOfMachines];
    addMachine();
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    int temp = machineArray[0].numberItemsWaiting();
    //assign the first size to a temp value with which the other machines queue size can be compared with.
    for (int i = 0; i<numberOfMachines; i++){
    machineArray[i] = new Machine(/** find out parameters from */); //check this line....
    if (machineArray[1].numberItemsWaiting() > temp) {
    machineArray[0].addItem(processedFood);
    } else {
    machineArray[1].addItem(processedFood);
    if (machineArray[0].size() == machineArray[1].size()) {
    machineArray[0].addItem(processedFood);
    //takes the machines as a parameter from the Machine class...
    public void addMachine(Machine machine) {
    packingMachine = machine;
    run();
    I'd appreciate any imrovements that you can spot, it just isn't right, the packing machine attribute that I've created isn't being used with the array correctly??
    cheers....

    public Router() {
    /*Machine*/ machineArray[] = new Machine[numberOfMachines];
    addMachine();
    }There may be more wrong...

  • What is the problem with this code ? Race condition??

    Guys,
    The idea behind the attached code is quite simple.
    I have a 2D parent array. First, I print a subset of this array into a table control (based on a sensor selection). Now, I want edit the numbers in the table. I need the changes to be reflected in the table and the parent 2D array. (In simple terms, this is like replacing the the edited array subset into the parent 2D array)
    The problem is when I change(edit) any entry in the table, the entry changes back to its original value. The change doesnt seem to be reflecting on the parent 2D array and the table. .
    Can anyone tell me where the problem is?
    Thanks
    Ravi
    Solved!
    Go to Solution.
    Attachments:
    Alarm threshold test.vi ‏14 KB

    I agree with Chris, here's an idea (of whatI think your code does):
    The case structure in your code was unnecessary, all the cases were the same so I removed them.
    The sequence structure was unnecessary.
    Ton
    Message Edited by TonP on 11-20-2008 07:52 PM
    Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
    Nederlandse LabVIEW user groep www.lvug.nl
    My LabVIEW Ideas
    LabVIEW, programming like it should be!
    Attachments:
    Alarm threshold test_BD.png ‏19 KB

  • Bioshd2..i have been having a problem with this bioshd2 error..no drivers detected..

     The comp is an hp 6530f.the first time the prob occured was when my dad unpluged the computer from the surge protecter..upon restart,it just says boot failure insert system disc and press enter.when the comp..was orriginally purchased there was no recovery disc and i never made one.when i do a diagnistic it says bioshd2 error no drivers are detected..i  tried changing bios settings and a few other things and nothing.so i turned the comp off and the next day turned it on and it booted up normally.the comp worked fine for about a week then one day my dad moved the comp a few inches to check somthinig behind it when the comp suddenly started to shut down by itself..and when i tried to turn it back on, i got the same thing. bioshd2..idont think my hd is bad because it came back on but what could be causing this problem..i tried alot of different things, even taking the battery out for 12 hours to reset bios and nothing..i left it alone for about a week and when it was turned on again it booted normally.now it is working but im afraid of it happening again..ive looked at all of the wires in the comp and dont see any faulty wires..i checked the power supply because when my dad moved it it shut off so i figured it was that but power seems to be working fine.ive been trying to perminetly fix the problem for weeks now and i dont know what else to check..any help would be awsome thanks.

    If the motherboard is touching the case it could cause problems. A short in a wire could cause problems as well.
    I don't want to say toss the computer around to see if it happens again, but unfortunately it's one of those things that you might not discover it happens again for another month. At that point you can start with changing out the cabling, it's a rather cheap inexpensive fix, then inspect the motherboard, look to see if there is any point where the board could be making contact with the case.
    If I have helped you in any way click the Kudos button to say Thanks.
    The community works together, click Accept as Solution on the post that solves your issue for other members of the community to benefit from the solution.
    - Friendship is magical.

  • What is the problem with this code?

    dear sirs...
    i have a page that does not contain any binding, it contains the following event:
    public void onCheck(DataActionContext ctx)
    ViewObject V=ctx.getBindingContext.findDataControl("AppModuleDataControl").getApplicationModule.findViewObject("empview1");
    V.setWhereClause("");
    V.executeQuery();
    V.first();
    note that the above code works if the table emp is on the page, however, if the page is not bound to the page (it does not contains the table) the statement in the bold will fire an exception saying that there is no binding. i am sure the V is not set to null.
    another problem appears, if i put the table and execute it within jdeveloper, it works correctly, however, if i run if i deploy the application into application server, the code never runs as if there is some kind of an error.
    i hope that you can anser me about the following;
    1- if the code above correct?
    2- how can i view the log for the application?
    3- System.out.println("test"); in jdeveloper works okay, in the application server, does it cause some kind of an error?
    thanks for any help & best regards

    If you don't close the ResultSet, different things happen based on which database you're running. You can keep read locks that you don't need. It wastes resources, and as different databases react differently to it, you might have weird bugs down the road that result from your practices of not properly closing ResultSets, PreparedStatements, and Connections. Put this in a loop like you've got here, and the effects may or may not get amplified.
    I write a close() for a ResultSet just as soon as I open it, just to make sure I don't forget. In a situation like this one, I would write something like so:
    for(int i = 0;i<someValue;i++)
    try
    //some code
    rs = pstmt.executeQuery();
    //some code that uses rs
    catch(Exception e)
    finally
      if (rs != null)
        rs.close();
      if (pstmt != null)
        pstmt.close();
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  • Pls help screwy problem with this code

    Im pretty new to java, and I'm trying to make a MASH program to practice. I cant figure out this error, as it checks out with some examples from a book. Please help!
    When compiling in the command prompt, this is what the errors are:
    cannot resolve symbol
    symbol: class MashBuild
    location: class MashEvent
    MashBuild gui;
    ^
    cannot resolve symbol
    symbol: class MashBuild
    location: class MashEvent
    public MashEvent(MashBuild in) {
    ^
    Here is the code for MashEvent.java -- I also have a class called MashBuild that has the code for the display of the program and all of the JButtons, etc. so I dont see why this shouldn't work
    import javax.swing.*;
    import java.awt.event.*;
    public class MashEvent implements ActionListener, Runnable {
         MashBuild gui;
         Thread playing;
         public MashEvent(MashBuild in) {
         gui = in;
         public void actionPerformed(ActionEvent event) {
              String command = event.getActionCommand();
              if (command == "Play")
              startPlaying();
              if (command == "Reset")
              clearAllFields();
         void startPlaying() {
              playing = new Thread(this);
              playing.start();
              gui.play.setEnabled(false);
              gui.reset.setEnabled(true);
         void clearAllFields() {
              for (int i = 0; i < 10; i++) {
              gui.houses.setText(null);
              gui.cars[i].setText(null);
              gui.people[i].setText(null);
              gui.kids[i].setText(null);
              gui.houseTR.setText(null);
              gui.carTR.setText(null);
              gui.peopleTR.setText(null);
              gui.kidTR.setText(null);
         public void run() {
              Thread thisThread = Thread.currentThread();
              while (playing == thisThread) {
              int choice;
              choice = (int)Math.floor(Math.random() * 10);
              if (choice != 40) {
                   gui.houseTR.setText(gui.houses[0].value);
                   gui.carTR.setText(gui.cars[0].value);
                   gui.peopleTR.setText(gui.people[0].value);
                   gui.kidTR.setText(gui.kids[0].value);
                        try {
                             Thread.sleep(100);
                        } catch(InterruptedException e) { }

    Or more precisely, did you compile MashBuild.java into MashBuild.class...
    It's one of the errors I run into when I forget to compile one of the classes that another class calls...
    - MaxxDmg...
    - ' He who never sleeps... '

  • What problem with this code

    Dear professional Javaer :)
    I have a code with much inbeliveble:
    import java.util.List;
    import java.util.ArrayList;
    class Test {
    private List<String> listStr = this.getListOfString();
    public Test() {
    System.out.println("Out: " + this.listStr);
    public List<String> getListOfString() {
    System.out.println("test");
    List<String> tmpList = new ArrayList<String>();
    tmpList.add("Temporary List.");
    return tmpList;
    public static void main(String[] args) {
    System.out.println("Begin main method...");
    Test t = new Test();
    And result is :
    {color:#ff0000}Begin main method...
    test
    Out: [Temporary List.]{color}
    My question is:
    Why contructor is created after call this.getListOfString();
    Why listStr = this.getListOfString();
    is legal because "this" is present by a object.
    Thanks.

    The following code should give a pretty complete picture of class initialization and construction
    class Super{
       static { System.out.println("Superclass static initializer"); }
       { System.out.println("Superclass instance initializer"); }
       int x = initX();
       public Super(){
          System.out.println("Superclass constructor");
       private int initX() { System.out.println("Superclass.x initialization"); return 0; }
    class Child extends Super{
       static { System.out.println("Child class static initializer"); }
       { System.out.println("Child class instance initializer"); }
       int y = initY();
       public Super(){
          System.out.println("Child class constructor");
       private int initY() { System.out.println("Child.y initialization"); return 0; }
    class Main{
       public static void main(String[] args){
          System.out.println("Creating instance of Child");
          new Child();
          System.out.println("\nCreating instance of Super");
          new Super();
    }

  • Whats the problem with this code?

    import javax.swing.JOptionPane;
    public class change{
      int coins[] = {1,5,10,25,50};
      int change=0;
      public void backtracking(coins,change){
        int b=0;
        for(int i=0; i<=4; i++){
          if (coins[i] <= change){
            b = max(b, coins[i]+backtracking(i, change - coins));
    System.out.println("Output: "+b);
    public static void main(){
    int input = JOptionPane.showInputDialog("Amountof the change? ");
    backtracking(coins, input);

    Here's a few, for starters
    import javax.swing.JOptionPane;
    public class change{
    //class names should start with capital letters
      int coins[] = {1,5,10,25,50};
      int change=0;
      public void backtracking(coins,change){
    //this is a method signature, needs type identifiers etc, something like public void backtracking(int[] anyIntArray,int anyInt)
        int b=0;
        for(int i=0; i<=4; i++){
    //here, 4 is a magic number, if you mean <= all the elements of coins[], use < coins.length
          if (coins[i] <= change){
    //coins[i] will never be less then change(which is 0)
            b = max(b, coins[i]+backtracking(i, change - coins));
    //there is no method max declared anywhere
    System.out.println("Output: "+b);
    public static void main(){
    //main method signature is incorrect, will compile, but will error
    int input = JOptionPane.showInputDialog("Amountof the change? ");
    //you're trying to put a string into an int
    backtracking(coins, input);
    //you have not created an instance of class Change, to use this method

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