Java 实战：利用面向对象与静态变量实现图书信息自动编号并统计总册数

以下是Java代码示例，实现了书籍类Book和图书类Library的相关逻辑： ```java public class Book { private String title; private double price; private String id; private static int count = 1; public Book(String title, double price) { this.title = title; this.price = price; this.id = "issn" + count; count++; } public String getTitle() { return title; } public double getPrice() { return price; } public String getId() { return id; } public static int getCount() { return count - 1; } public String toString() { return "[书名]：" + title + " [价格]：" + price + " [图书编号]：" + id + " [本书的册数]：" + getCount(); } } public class Library { public static void main(String[] args) { Book[] books = new Book[4]; books[0] = new Book("java程序", 35.6); books[1] = new Book("java程序", 35.6); books[2] = new Book("c语言程序设计", 42.6); books[3] = new Book(null, 8.8); for (Book book : books) { System.out.println(book.toString()); } } } ``` 输出结果会按照题目要求进行格式化输出，其中图书编号自动增加。 ######[AI写代码神器 | 1137点数解答 | 2024-04-02 10:18:39]