package cn.book;
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public class Book {
private String auther="吴承恩";
private String name="西游记";
private String number="1";
private double price=100;
public String getAuther() {
return auther;
}
public void setAuther(String auther) {
this.auther = auther;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
@Override
public String toString() {
return " 作者:" + auther + ", 书名:" + name + ", 书号:" + number + ", 价格:" + price ;
}
//可以从这调用get set 方法 设置属性
public static void main(String[] args) {
Book book = new Book();
System.out.println(book.toString());
}
}
首先，对象数组：
人类：
public class Person {
//定义Person类的属性
public int age;
public String name;
//构造方法
public Person(int age,String name){
this.age = age;
this.name = name;
}
}
测试类：
public class Test {
public static void main(String[] args) {
//实例化一个对象数组
Person[] p = new Person[3]; //{new Person(23,"孙港"),new Person(24,"王悦"),new Person(25,"王芳")}
p[0] = new Person(32,"sg");
p[1] = new Person(24,"王悦");
p[2] = new Person(25,"王芳");
//循环输出对象数组
for(int i = 0;ip.length;i++){
System.out.println("age属性是："+p[i].age+",name属性是："+p[i].name);
}
}
}
只是把传入的参数变成了传数组。希望可以帮到你！
package com.hua.excep;
public class Libary {
private int id;
private String name;
private String shop;
private int num;
//两个构造方法
//无参
public Libary() {
}
//四个参数
public Libary(int id, String name, String shop, int num) {
this.id = id;
this.name = name;
this.shop = shop;
this.num = num;
}
//输入图书信息
public void inputBook(int id,String name,String shop){
this.id=id;
this.name=name;
this.shop=shop;
}
//输出三个图书信息
public int getId() {
return id;
}
public String getName() {
return name;
}
public String getShop() {
return shop;
}
//修改库存
public void setNum(int num) {
this.num = num;
}
}
