Setting color of a specific line?

Question

okay so in swing is it possible to set a portion of the text in a text field to a different color? Like in my chat program(below) can I make it so all incoming chat(instring) is blue and all outgoing text(string) is red?
Am I using the wrong text component for changing the color of a line? Should I even be using J text components for this?
The tutorial often puts tons of different text components in to its examples, and uses odd methods to change the color.
It seems that I have to use something like setCaretColor, but i am not clear on how to use this in the way I want to use it.
here is the code:
import java.io.*;
import java.net.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.JOptionPane;
import javax.swing.JDialog;
import javax.swing.JTextField;
import java.beans.*; //property change stuff
import java.awt.*;
import java.awt.event.*;
public class server extends JFrame implements ActionListener
     JButton recieve;
     String string;
        String instring;
     String aft = " ";
     String bef = " ";
     String allchat=" ";
     JTextField towrite;
     boolean stop = false;
     String name;
     JTextArea chatbox;
     public server(){
                         setSize(490,550);
                         getContentPane().setLayout(null);
                         recieve = new JButton("send message");
                         recieve.setBounds(30,150,150,35);
                         getContentPane().add(recieve);
                                   recieve.addActionListener(this);
                         chatbox = new JTextArea("chat goes here");
                         chatbox.setEditable(false);
                         chatbox.setBounds(10,200,460,270);
                         getContentPane().add(chatbox);
                                        towrite = new JTextField("Write message here");
                         towrite.setBounds(10,475,460,35);
                         getContentPane().add(towrite);
                                        towrite.addActionListener(this);
                         setVisible(true);
               name = (String)JOptionPane.showInputDialog(null,"Enter your name");
          while(stop==false){
               try
               ServerSocket socket = new ServerSocket(4019);
               Socket insocket =socket.accept();
               BufferedReader in = new BufferedReader (new InputStreamReader(insocket.getInputStream()));
               instring = in.readLine();
               socket.close();
               bef = instring;
               if(bef.equals(aft)){}else{
                    allchat=instring+"\n"+allchat;
                    chatbox.setText(allchat);
catch(Exception e){}
         public void actionPerformed(ActionEvent evt)
        if(evt.getActionCommand().equals("send message"))
try
Socket socket = new Socket("67.166.126.246",4020);
OutputStream out = socket.getOutputStream();
string=name+": "+towrite.getText();
byte buffer[] = string.getBytes();
out.write(buffer);
socket.close();
catch(Exception e){}
               bef = string;
               if(bef.equals(aft)){}else{
                    allchat=string+"\n"+allchat;
                    chatbox.setText(allchat);
               aft=bef;
public static void main(String[] args)
server s = new server();}}

Answer 1

Hmmmm im sorry but Im not quite sure I understand how to do this.
Do you have to know the exact digits at which the text starts and ends?
or can you, as mentioned just use html tags to set the text color?
If i were to highlight a line of the text, would that text be highlighted even if its location in the string changed?
It would seem that tags would be easier but from what I have tried they don't seem to work in editor panes, but the ydo work in buttons
Im sorry, Im being a bit of a pest, but I have not been doing java for that long, and I do not have a teacher, so all of my questions have to go here.