public class AudioBook extends MusicalElement { private static final long serialVersionUID = -7145972304319088676L; private String author, language, category; public AudioBook(String title, int duration, String content, String author, Language language, Category category) { super(title, duration, content); this.author=author; this.language=language.name(); this.category=category.name(); } public String getAuthor(){return author;} public String getLanguage(){return language;} public String getCategory(){return category;} public void setArtist(String author){this.author=author;} public void setGenre(Language language){this.language=language.name();} public void setCategory(Category category){this.category=category.name();} public String toString() { return "Id : "+getId()+"\nTitle : "+getTitle()+"\nDuration : "+getDuration()+"\nContent : "+getContent()+"\nAuthor : "+getAuthor()+"\nLanguage : "+getLanguage()+"\nCategory : "+getCategory(); } }