改正代码中的错误package ke; public class RecordBooksOrder { //成员变量 int id; String name; //图书名称 double price; //图书单价 int number; //图书数量 double money; //总价 String publish; //出版社 //构造方法 public Books(int id, String name, double price, int number, double money, String publish) { super(); this.id = id; this.name = name; this.price = price; this.number = number; this.money = money; this.publish = publish; } @Override public String toString() { String message = "图书编号：" + id + " 图书名称：" + name + " 出版社：" + publish + " 单价：" + price + " 库存数量：" + number; return message; } public void setNumber(int number) { this.number = number; } }

代码中存在一个错误，类名不匹配。应该将类名从 `RecordBooksOrder` 改为 `Books`。修改后的代码如下：

package ke;

public class Books { 
    //成员变量     
    int id;     
    String name; //图书名称     
    double price; //图书单价     
    int number;   //图书数量     
    double money; //总价     
    String publish; //出版社     
    
    //构造方法     
    public Books(int id, String name, double price, int number, double money, String publish) {         
        super();         
        this.id = id;         
        this.name = name;         
        this.price = price;         
        this.number = number;         
        this.money = money;         
        this.publish = publish;     
    } 		
    
    @Override 		
    public String toString() { 			
        String message = "图书编号：" + id + "  图书名称：" + name + "  出版社：" + publish + "  单价：" + price + "  库存数量：" + number; 			
        return message; 		
    } 		
    
    public void setNumber(int number) { 			
        this.number = number; 		
    } 	
}

请注意，修改后的类名应该与文件名相同，即应该将文件名也改为 `Books.java`。