public void modifyItem(int position,Object newObj){
  if (isDataListNotEmpty() && position < mDataList.size() && position >= 0) {
    mDataList.set(position,newObj);
    notifyItemChanged(position);
  }
}

public void modifyItem ( int position , Object newObj ) { if ( isDataListNotEmpty ( ) && position < mDataList . size ( ) && position >= 0 ) { mDataList . set ( position , newObj ) ; notifyItemChanged ( position ) ; } }
modify an exit item
