JAVA基础学习之路（七）对象数组的定义及使用

class Book {
    private String name;
    private double price;
    public Book(String n ,int p) {
        name = n;
        price = p;
    }
    public void setName(String n) {
        name = n;
    }
    public void setPrice(double p) {
        price = p;
    }
    public String getInfo() {
        return "书名"+name+"\n"+
                "单价"+price;
    } 
}
    
public class test2 {
    public static void main(String args[]) {
        Book arr[] = new Book[3];//开辟数组 空间
        arr[0] = new Book("java",10);//对象需要分别实例化
        arr[1] = new Book("js",20);
        arr[2] = new Book("py",30);
        for(int i=0; i<arr.length; i++) {
            System.out.println(arr[i]);
            System.out.println(arr[i].getInfo());
        }
    }    
}