Problems with Buffered Read() - write() cycle

Question

URGENT!!!
I have two network hosts communicating through Socket.
i need a cycle of read/write until an escape string is written ("QUIT").
BUT after first readLine() it stucks on blocking method, doesn't read anything!
why?
so my code look like this (i cut out initialization and boring parts):
BufferedReader input;
BufferedWriter output;
String readString = "";
while(read!="QUIT") {
output.write("mySentence");
readString = input.readLine();
}THANKS

Answer 1

you are all right, but I do use newLine() just to have the line separator.
the exception is always the same (this afternoon it didn't result in an exception... ):
java.net.SocketException: Software caused connection abort: recv failedI really can't figure it out...
moreover, I don't understand which side generates the problem, since one side is an Applet.
Again, the curious thing is that before the cycle they read and write (just once) normally!
I post the actual part of the code, in order not to create misunderstandings...
of course I used EITHER the "\n" OR the newLine() but not togheter...
server side the method is called within a thread class...
APPLET:
do     {
       String letto = listaParametri.poll();
         os.write(letto);
        os.newLine();
        while( !letto.equals("LAST") );
os.flush();
while( this.isActive() )     {
             received = is.readLine();
           if     ( received.equals("CHANGE") )
                          getAppletContext().showDocument(reloadURL, "_main");
                          break;
           else     if( received.equals("ALIVE") )     
                         {                               os.write("YES\n");
                           os.newLine();
                           os.flush();
                                              }SERVER:
while(!CLOSED)
                                     {if(CHANGE)     {
                                                     outputStream.write("CHANGE");
                                                     outputStream.close();
                                                     System.out.println("sent RELOAD comand - now Closed - );
                                                     break;
                                     else     {
                                                outputStream.write("ALIVE\n");
                                                //outputStream.newLine();
                                               outputStream.flush();
                                                    System.out.println("inputStream");
                                               appletStatus = inputStream.readLine();
                                                    System.out.println(" - appletStatus=" + appletStatus);
                                               if( appletStatus == null )               CLOSED = true;
                                     else     if( appletStatus.equals("YES") )     CLOSED = false;