Thread: Converting message with .mp3 string attached to an Icon

I need to add a fragment of code to the code below so that when a user sends a message with the ".mp3"string attached to it, the string should be convert into an icon . Any ideas ?

* GUIChatFrame.java
*

package guiclient;
 
import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import javax.swing.*;
import javax.swing.text.*;
 
/**
 
 */
public class GUIChatFrame extends JFrame implements ActionListener
{
   private ChatClient client;
   private ChatRoom room;
   /**
    * Creates a new instance of GUIChatFrame
    */
   public GUIChatFrame(ChatRoom room, ChatClient client)
   {
      this.room = room;
      this.client = client;
      createWindow();
   }
 
   // elements of the GUI
   private JTextPane chatRoomText;   // text pane to display all chatter's messages
   private JTextArea intext;         // text are for adding the current chatter's message
   private JScrollPane chatRoom;     // the chat display is scrollable
   private JButton quitButton;       // leave the chat room
   private JButton sendButton;        // send the message
 
   private void createWindow() throws HeadlessException
   {
      final int CLIENT_WINDOW_WIDTH = 400;
      final int CLIENT_WINDOW_HEIGHT = 450;
      //JFrame frame = new JFrame("M362 Chat Server Demo");
      //frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      chatRoomText = new JTextPane();
      chatRoomText.setSize(400, 400);
      JScrollPane chatRoom =
            new JScrollPane(chatRoomText,
            JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
            JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
      chatRoomText.setEditable(false);
      intext = new JTextArea(6,30);
      intext.setEditable(true);
 
      createStyles();
      JScrollPane inputPane = new JScrollPane(intext,
            JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
      sendButton = new JButton("Send");
      sendButton.addActionListener(this);
 
      quitButton = new JButton("Quit");
      quitButton.addActionListener(this);
 
      JPanel buttonPanel = new JPanel();
      buttonPanel.setLayout(new GridLayout(0, 1));
      buttonPanel.add(sendButton);
      buttonPanel.add(quitButton);
 
      JPanel inputArea = new JPanel();
      inputArea.setLayout(new BorderLayout());
      inputArea.add(inputPane, BorderLayout.CENTER);
      inputArea.add(buttonPanel, BorderLayout.EAST);
      Container content = getContentPane();
      content.add(chatRoom, BorderLayout.CENTER);
      content.add(inputArea, BorderLayout.SOUTH);
      setSize(CLIENT_WINDOW_WIDTH, CLIENT_WINDOW_HEIGHT);
 
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   }
 
   // button event handling
   public void actionPerformed(ActionEvent ae)
   {
      Object buttonClicked = ae.getSource();
      if(buttonClicked.equals(sendButton))
      {
         JTextArea i = getInputArea();
         room.send(i.getText());
 
         i.setText("");
      }
      else if(buttonClicked.equals(quitButton))
      {
         room.send("BYE");
         System.exit(0);
      }
   }
 
   public JTextPane getChatRoom()
   {
      return chatRoomText;
   }
 
   public JTextArea getInputArea()
   {
      return intext;
   }
 
   DefaultStyledDocument doc;
 
   // predefined styles
   StyleContext styles = new StyleContext();
   Style smile, normal, boldstyle;
   Style sad;
   void createStyles()
   {
      smile = styles.addStyle("smile", null);
 
      URL url = this.getClass().getClassLoader().getResource("guiclient/smile.jpg");
      StyleConstants.setIcon(smile, new ImageIcon(url));
 
      //additional style
sad = styles.addStyle("sad", null);
url = this.getClass().getClassLoader().getResource("guiclient/sad.jpg");
StyleConstants.setIcon(sad, new ImageIcon(url));
 
      normal = styles.addStyle("normal", null);
      boldstyle = styles.addStyle("bold", null);
      StyleConstants.setBold(boldstyle, true);
      doc = new DefaultStyledDocument();
   }
 
  void setOutputText(String message)
{
   try
   {
      doc.insertString(doc.getLength(), "\n", normal);
 
      // emphasize the chatter's name
 
      if (message.contains(":"))
      {
         String chatter = message.substring(0, message.indexOf(":"));
         doc.insertString(doc.getLength(), chatter, boldstyle);
         message = message.substring(message.indexOf(":"));
      }
 
      // convert smiley and sad face symbols into icons
      String sm = ":-)";
      String sd = ":-(";
 
      //temporary variables to gradually chop up the input message
      String pre1 = "";
      String pre2 = "";
 
      while ( message.contains(sm) || message.contains(sd))
      {
         if (message.contains(sm))
         {
            pre1 = message.substring(0, message.indexOf(sm));
         }
         if (message.contains(sd))
         {
            pre2 = message.substring(0, message.indexOf(sd));
         }
 
         if (pre2=="" || // there are no sad faces in this message OR
             (pre2 != "" && pre1 != "" &&
             pre1.length() < pre2.length()) ) // found a smiley before a sad face
         {
            message = message.substring(message.indexOf(sm) + sm.length());
            doc.insertString(doc.getLength(), pre1, normal);
            doc.insertString(doc.getLength(), sm, smile);
            System.out.println(pre1 + sm);
         }
         else if (pre1=="" || // there are no smileys in this message
             (pre1 !="" && pre2 != "" &&
             pre2.length() < pre1.length())) // there is a sad face before a smiley
             {
                message = message.substring(message.indexOf(sd) + sd.length());
                doc.insertString(doc.getLength(), pre2, normal);
                doc.insertString(doc.getLength(), sd, sad);
                System.out.println(pre2 + sd);
             }
 
        pre1="";
        pre2="";
     } // end while
 
      // print the remaining message
      if(message.length()>0)
      {
         doc.insertString(doc.getLength(), message, normal);
      }
 
      getChatRoom().setDocument(doc);
   }
   catch (Exception ex)
   {
      ex.printStackTrace();
   }
}
}