1. import processing.net.*;
   import processing.serial.*;
   import cc.arduino.*;
   
   
   Serial port;
   String msg = "Entry Lock opened at " +hour()+":"+minute()+":"+second()+"!";
   
   //copy and paste these from your application in dev.twitter.com
   
   
   void setup() {
     String portName = Serial.list()[1];
     port = new Serial(this, portName, 9600);
      println(Serial.list());
    
   }
   void draw() {
   
   while (port.available() > 0) {
   
              String consumer_key = "***";                  //i hide it
              String consumer_secret = "***";
              String oauth_token = "***";
              String oauth_token_secret = "***";
              
              Twitter twitter = new TwitterFactory().getOAuthAuthorizedInstance (
              consumer_key, consumer_secret,
              new AccessToken( oauth_token, oauth_token_secret) );
             String str1 = port.readString();
             String str2 = "ok";
             println(str1);   
             if(str1.equals(str2) == true){
             
             
               println("Sending Code....");
                     try {
                     Status st = twitter.updateStatus(msg);
                     println("Successfully updated the status to [" + st.getText() + "].");
                         }
                     catch (TwitterException e) {
                                       println(e.getStatusCode());
                                                 }
                                      }
                                  
    }
   }
   
   
   

there's my code above which accesses my twitter account and post a message..
i can send a message to my twitter. however,
when i already send one message to twitter, the next time i send again, i get 403.
so i need to stop Processing and run it again to send another post.
that is very inconvenient don't you think? so i would really appreciate if you help me find out
and solve the the problem that's making 403....
please.....