?? book.java
字號:
//Exercise 7.2
public class Book {
//variables
private String name;
private Author author;
//constructor
public Book (String name , Author author){
this.name = name;
this.author = author;
}
//getter and setter
public String getName(){
return name;
}
public Author getAuthor(){
return author;
}
public String getAuthorName(){
return getAuthor().getName();
}
//toString
public String toString(){
return "The book is "+ name + " of "+ author;
}
}
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