Can someone help me remove flicker from this applet?

[cpope]

// messagingClient Class
// UNDER DEVELOPMENT
// Currently Reads All Messages From Server, sends acknowledgement that messages are received
// then loops back and obtains new set of messages

import java.net.*;
import java.io.*;
import java.util.*;
import java.applet.Applet;
import java.awt.*;

public class messagingClient extends Applet implements Runnable
{
Image messageimage;
Graphics messagegraphics;
Thread me;
int xpos;
int ypos;
int textwidth;
String clienttype;
String callcenterid;
Vector messages;
messagingServerInfo server;
Socket connection;
String message;
String endmsg;
int appWidth;
int appHeight;
int FONT_SIZE;
int BK_R;
int BK_G;
int BK_B;
int TXT_R;
int TXT_G;
int TXT_B;
int Y_OFFSET;
String FONT_NAME;
int SPEED;
Color BK;
Color TXT;

public void init()
{
clienttype = getParameter("clienttype"
callcenterid = getParameter("callcenterid"
appWidth = Integer.parseInt(getParameter("appWidth&quot);
appHeight = Integer.parseInt(getParameter("appHeight&quot);

setBackground(Color.black);
messageimage = createImage(appWidth, appHeight);
messagegraphics = messageimage.getGraphics();

FONT_SIZE = Integer.parseInt(getParameter("FONT_SIZE&quot);
FONT_NAME = getParameter("FONT_NAME"
SPEED = Integer.parseInt(getParameter("SPEED&quot);

Y_OFFSET = appHeight/2 - FONT_SIZE/2;
BK_R = Integer.parseInt(getParameter("BK_R&quot);
BK_G = Integer.parseInt(getParameter("BK_G&quot);
BK_B = Integer.parseInt(getParameter("BK_B&quot);
TXT_R = Integer.parseInt(getParameter("TXT_R&quot);
TXT_G = Integer.parseInt(getParameter("TXT_G&quot);
TXT_B = Integer.parseInt(getParameter("TXT_B&quot);
BK = new Color(BK_R, BK_G, BK_B);
TXT = new Color(TXT_R, TXT_G, TXT_B);

xpos = appWidth + 10;
ypos = Y_OFFSET; // position to look right
messages = new Vector();
server = new messagingServerInfo();
connection = null;
message = "MESSAGES AWAIT!";
endmsg = "---- END OF MESSAGES ----";
me = new Thread(this);
me.start();
}

public void paint(Graphics g)
{
messagegraphics.setColor(BK); // Background colour again
messagegraphics.fillRect(0,0,appWidth + 1, appHeight + 1);
messagegraphics.setColor(TXT); // Text colour here
try
{
messagegraphics.setFont(new Font(FONT_NAME,0,FONT_SIZE));
}
catch(NullPointerException _ex) { }
messagegraphics.drawString(message, xpos, ypos);
g.drawImage(messageimage, 0, 0, this);
}

public void update(Graphics g)
{
paint(g);
}

public void run()
{

//connect to Server
try
{
connection = new Socket(server.getServer(), server.getPort());
// System.out.println("Connected To Server"

ObjectOutputStream output = new ObjectOutputStream(connection.getOutputStream());

//SEND CLIENT PARAMETERS TO SERVER - SERVER ALWAYS EXPECTS 2 PARAMETERS FROM CLIENTS
try
{
output.flush();

output.writeObject((String)clienttype);
output.flush();

output.writeObject((String)callcenterid);
output.flush();

}
catch(IOException e)
{
//client closed connection early
}


//READ SERVER MESSAGES
while(true) //CONNECTION IS OPEN
{
ObjectInputStream input = new ObjectInputStream(connection.getInputStream());
while(true) //MESSAGES ARE BEING SENT
{
try
{
message = (String)input.readObject();
//If end of messages occurs, break from reading loop
if(message.equals(endmsg))
break;
messages.add(message);
//System.out.println(message);
}
catch(ClassNotFoundException e)
{
//System.out.println("Unknown Object Sent By Server"
}
} //END WHILE(TRUE) MESSAGES ARE BEING SENT


//**** FUTURE AREA OF SCROLLING MESSAGES FROM VECTOR ACROSS APPLET ****
for(int msgnum=0; msgnum < messages.size(); msgnum++)
{


message = (String) messages.elementAt(msgnum);
textwidth = 7 * message.length();
xpos = appWidth + 10;
while(xpos > (textwidth-2*textwidth))
{
xpos--;

try
{
Thread.sleep(SPEED);
}
catch (InterruptedException _ex) { }

repaint();
}
}

xpos = appWidth + 10;
messages.removeAllElements();

//**** AFTER COMPLETED SENDING ONE 'CYCLE', OUTPUT TO SERVER THAT ****
//**** CLIENT IS READY FOR THE NEXT 'CYCLE' ****
ObjectOutputStream ops = new ObjectOutputStream(connection.getOutputStream());
String ready = &quot;CLIENT READY&quot;;
ops.writeObject((String)ready);
output.flush();

} //END WHILE(TRUE) CONNECTION IS OPEN
}
catch(UnknownHostException e)
{
//System.out.println(&quot;Cannot Find Server&quot;
//System.out.println(e);
//System.exit(1);
}
catch(IOException e)
{
//System.out.println(&quot;Server Found, but cannot connect to Server&quot;
//System.out.println(e);
//System.exit(1);
}

} // END RUN

}

 

[pipk]

try putting

super.paint(g);

as the first line in your paint method.

 

[cpope]

Sorry pipk... It's still flickering....

Any other ideas??

 

[cpope]

JRE - PLUG IN 1.3.1 BUG

I found the root of the problem, but as far as I know there is no solution. When attempting to implement double-buffering, I downloaded other applet code from the internet. I just replaced the class name of the downloaded applet into the HTML generated by htmlconverter (generated to utilize the Java Plug-in). The downloaded applet flickered.

Then I just used the regular plain <applet> tags (not using HTMLconverter and plug-in) and the downloaded applet no longer flickered.

The applet above uses functions that require the JRE plug-in, so as far as I know there is not a fix for this, maybe in 1.4. Please let me know if there is a work around for this problem.