我的程序应该返回两个不同对象的不同属性。在我的主要方法中,我在创建新对象时将这些属性设置为参数。但是当我调用那些getter方法(我已经写在一个单独的类中,如果需要的话我可以发布那个类),它不会返回所有的属性。它只打印出第一个属性(也被设置为第一个参数),而不是其他两个值。我不知道我做错了什么。为什么getter方法不返回任何对象的属性?
我的代码:主类:
package main;
public class Main {
public static void main(String[] args) {
//creating object for book 1
Book book1 = new Book("The brief history of time", "111", new String[]{"S. hawking", "hawking's friends"});
//creating object for book 2
Book book2 = new Book("100 years of solitude", "222", new String[]{"G.marquez", "marquez's friend"});
System.out.println("All info for the first book: \n");
System.out.println("Name: " + book1.getName());
System.out.println("ISBN: " + book1.getIsbn());
System.out.println("Authors: " + book1.getAuthors());
System.out.println("\n\n");
System.out.println("All info for the second book: \n");
System.out.println("Name: " + book2.getName());
System.out.println("ISBN: " + book2.getIsbn());
System.out.println("Authors: " + book2.getAuthors());
}
}
Book类:
package main;
public class Book {
//variables
private String name;
private String isbn;
private String[] authors;
//constructors
public Book(String name, String isbn, String[] authors) {
this.name = name;
this.isbn = name;
this.authors = authors;
}
//setters
public void setName(String name) {
this.name = name;
}
public void setIsbn(String isbn) {
this.isbn = isbn;
}
public void setAuthors(String[] authors) {
this.authors = authors;
}
//getters
public String getName() {
return name;
}
public String getIsbn() {
return isbn;
}
public String[] getAuthors() {
return authors;
}
}
提供设计Book类也是如此。 –
你可以发布书类,你得到的实际输出和你期望的输出吗? – Paolo
Luiggi门多萨,保罗,我现在编辑。 – Riyana