private Map _getParameters(String paramString) { Map navParams = new HashMap(); if (paramString != null) { byte[] desMap = Base64.decode(paramString); Map naviState = null; try { naviState = ObjectDeserializer.deserializeMap(desMap); } catch (IOException iox) { } catch (ClassNotFoundException classNotFoundEx) { } if (naviState != null) { navParams.putAll(naviState); } } return navParams; }