Mine

    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();        }    }