Trying to write an applet that reads/displays a file from a remote server

Question

Hey all,
I'm trying to make a little applet that launches from a browser that allows me to read a file from a server, reads it line by line and displays each line, and continues to read/monitor the file until I get a specific line of text.
I've tried to do some code and although I can read the file (and display it), I can't seem to detect the end string (the if statement that tests if the line == "--END--" seems to have no effect, i.e. constant false).
I have a feeling the approach I took is wrong since this seems insecure and just looks bad (I've seen stuff that seems to indicate I need to do something with implements Runnable or something.) Even if anyone doesn't have the time to actually do the framework of this, if they could perhaps outline an approach and any necessary topics I need to look at (such as
1. Go and read the threads tutorial.
2. Go and read the X section in the Y tutorial.
3. Check out this <link>, as they seem to be doing something similar to what you're doing.
Thanks in advance.
import java.util.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.net.*;
public class FaxTest extends JApplet {
     JTextArea area;
     JScrollPane pane;
     String display;
     String old_display;
     String tmp;
     boolean end = false;
     java.util.Timer FileTimer = new java.util.Timer();
     TimerTask FileReadTask = new readFile();
     public void init() {
          area = new JTextArea();
          area.setWrapStyleWord(true);
          area.setLineWrap(true);
          area.setEditable(false);
          pane = new JScrollPane(area);
          Container c = getContentPane();
          c.add(pane);
          FileTimer.schedule(FileReadTask, 500,5000);
     public void stop()
          FileTimer.stop();
     class readFile extends TimerTask {
          public void run() {
          java.util.Timer timer = new java.util.Timer();
          TimerTask task = new FaxUpdate();
          timer.schedule(task, 1000,1000);
          try {
          display = "";
          String filename = getParameter("FILENAME");
          URL url = new URL(filename);
          InputStreamReader in = new InputStreamReader(url.openStream());
          BufferedReader br = new BufferedReader(in);
          while( (tmp = br.readLine()) != null) {
               if (tmp == "--END--\n") end = true;
               display += tmp;
          catch(IOException error) {
          display = "Error" + error;
     class FaxUpdate extends TimerTask {
          public void run() {
          if(end == true) {
               area.setText("finito");
          else area.setText(display);
}

Answer 1

use tmp.equals("--END--\n") instead of tmp == "--END--\n"
The == means does tmp reference the same object as "--END--\n" which will probably never be true. Using the equals method means does tmp contains the same characters as "--END--\n"