Arrays.sort()方法之重写排序规则---->详细请参考注释
先构造Book对象类型
class Book {
private String name;
private double price;
public Book(String name, double price) {
this.name = name;
this.price = price;
}
public void setPrice(double price) {
this.price = price;
}
public double getPrice() {
return price;
}
public String getName() {
return name;
}
public void setName(String name) {
this.