hello,

I made a small step forward in my problem. But I progress again no
piece: ((( Ask for help...

I have an external process, which makes certain computations for
graph. If the process the 1. Piece of the input in
process.getOutputStream() gets, returns a correct result in
process.getInputStream(). But if the process gets more the next piece
of the input, it does not react at all to it. I.e. I get myself only
the computation, always on the 1. Piece of input refers. No matter,
how many "pieces" the input...

there's the code:

public void dynagraph(){
   Process process = null;
   try{
       process = Runtime.getRuntime().exec("/usr/local/tools/graphviz-1.10/bin/dynagraph
-d -rp");
   }catch (IOException exc){ System.err.println(exc.getMessage());}
       
   PrintWriter pw = new PrintWriter(process.getOutputStream());
   // "open view V" ist das 1. Stueck der Eingabe
   // "end" ist nur die Bezeichnung fuer mich(Es macht in meinem
ganzem
   // Programm)
   String[] lines = new String[]{"open view V", "end"};
   // "open view V", "insert V node a" ist Eingabe aus 2 Stuecken
   // String[] lines = new String[]{"open view V", "insert V node a",
"end"};
   try{
       fw = new FileWriter("/usr/people/bendorai/HDUI/hd/ergebnisse");
       int i = 0;
       while(true){
           String line = lines[i];
           if (line.equals("end"))
               break;
           i++;
           pw.println(line);
           pw.flush();
           readProcessResult(process.getInputStream());
       }
       readProcessResult(process.getInputStream());
       process.destroy();
       pw.close();
       fw.close();
   }catch(IOException e){System.out.println(e.getMessage());}
}

public void readProcessResult(InputStream input) throws IOException {
   int ch = 0;
   // write result to file
   while( (ch=input.read()) != -1){
       fw.write((char)ch);
       fw.flush();
   }
}

thanks,
Joana