Overview of Kotlin - 9

/* 	Java Code 	*/
	
class Book {

   private String title;

   private Author author;
  
   public String getTitle() {

       return title;

   }

   public void setTitle(String title) {

       this.title = title;

   }

   public Author getAuthor() {

       return author;

   }

   public void setAuthor(Author author) {

       this.author = author;

   }

}