public void write(File file) {
       try{
           ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));
           //for(Object o : cdWinkel){
           //     if(out.equals(o) == false){
                   out.writeObject(cdWinkel);
            //    }

          // }
           out.close();
       }
       catch(IOException i){
           i.printStackTrace();
       }
    }

    
    public void read( File file ) {
        try{
            ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
            //System.out.println(file);
            //ingelezenCd = (Cd) in.readObject();
            if(in != null){
                cdWinkel = (ArrayList) in.readObject(); 
            }
            
            in.close();

        }
        catch(EOFException eo){
            eo.printStackTrace();
        }

        catch(IOException i){
            i.printStackTrace();
        }

        catch(ClassNotFoundException c){
            c.printStackTrace();
        }

    }