stateless vs stateful in react code example

Example: stateful component vs stateless component

class Parent extends Component {
  constructor() {
    super()
    this.state = {
      books: [],
      favoriteAuthors: []
    }
  }
  render() {
    return (
      <div>
        <Books books={this.state.books} />
        <FavoriteAuthors favoriteAuthors={this.state.favoriteAuthors} />
      </div>
    )
  }
}