創(chuàng)建項目ArticleManagee,創(chuàng)建類Article简十，添加4個屬性：書籍名稱（name）报嵌、書籍庫存數(shù)量（amount）、書籍價格（price）、
書籍借出數(shù)量（number）,1個方法展示書籍信息舒帮。
package tushuguanlixitong;
/**
* 書籍類
*/
public class Article {
public String name; //書籍名稱
public int amount; //書籍庫存數(shù)量
public double price; //書籍價格
public int number; //書籍出售數(shù)量
/*
書籍信息展示
*/
public void print(int index){
System.out.println(index + "\t" + name + "\t" + price +"\t" + amount + "\t" + number);
}
}
創(chuàng)建ArticleSet類，并在類中定義1個長度為50的數(shù)組保存商品陡叠。
public class ArticleSet {
public static Article[] articles;
/*
書籍合集（倉庫）
*/
Article[] articlse = new Article[50];
}
創(chuàng)建類ArticleManage会前，創(chuàng)建AricleSe對象articleSet，實現(xiàn)初始化數(shù)據(jù)的方法initial（）匾竿，初始化4本書籍的信息
/*
管理類
*/
// 創(chuàng)建一個實體的倉庫對象瓦宜，并初始化
ArticleSet articleSet = new ArticleSet();
Scanner input = new Scanner(System.in);
/*
初始化商品
*/
public void initial() {
Article jinpinmei = new Article();
jinpinmei.name = "金品梅";
jinpinmei.price = 648;
jinpinmei.amount = 1000;
jinpinmei.number = 0;
Article liaozhai = new Article();
liaozhai.name = "聊齋志異";
liaozhai.price = 199;
liaozhai.amount = 2000;
liaozhai.number = 0;
Article rulinwaishi = new Article();
rulinwaishi.name = "儒林外史";
rulinwaishi.price = 648;
rulinwaishi.amount = 1000;
rulinwaishi.number = 0;
Article sanguoyanyi = new Article();
sanguoyanyi.name = "三國演義";
sanguoyanyi.price = 648;
sanguoyanyi.amount = 1000;
jinpinmei.number = 0;
articleSet.articlse[0] = jinpinmei;
articleSet.articlse[1] = liaozhai;
articleSet.articlse[2] = rulinwaishi;
articleSet.articlse[3] = sanguoyanyi;
}
/*
菜單切換
*/
public void startMenu() {
boolean flag = true;//是否繼續(xù)操作
do {
System.out.println("歡迎使用圖書管理系統(tǒng)");
System.out.println("---------------------------------------");
System.out.println("1.查看圖書信息");
System.out.println("2.新增圖書");
System.out.println("3.刪除圖書");
System.out.println("4.借出圖書");
System.out.println("5.歸還圖書");
System.out.println("6.退出");
System.out.println("---------------------------------------");
System.out.println("請選擇要執(zhí)行的操作：");
int choice = input.nextInt();
switch (choice) {
case 1:
System.out.println("查看圖書信息");
break;
case 2:
System.out.println("新增圖書");
break;
case 3:
System.out.println("刪除圖書");
break;
case 4:
System.out.println("借出圖書");
break;
case 5:
System.out.println("歸還圖書");
break;
case 6:
System.out.println("謝 謝 使 用！");
flag = false;
break;
default:
System.out.println("輸入不符合要求請重新選擇岭妖！");
break;
}
} while (flag);
} public void search(){
System.out.println("編號\t名稱\t價格\t庫存\t售出");
for (int i = 0; i < ArticleSet.articles.length; i++) {
if (ArticleSet.articles[i] != null) {
ArticleSet.articles[i].print(i + 1);
}
}
/**
* 查看商品信息
*/
}public void add(){
System.out.println("請輸入書籍名稱");
String name = input.next();
System.out.println("請輸入價格");
int price = input.nextInt();
System.out.print("請輸入庫存：");
int amount = input.nextInt();
Article article = new Article();
article.name = name;
article.price = price;
article.amount = amount;
article.number = 0;
for (int i = 0 ; i < articleSet.articlse.length; i++){
if (articleSet.articlse[i] == null){
articleSet.articlse[i] =article;
break;
}
}
/**
* 歸還書籍
*/
}public void delete() {
System.out.println("請輸入書籍編號：");
boolean flag = true ; //是否歸還成功
int card = input.nextInt();
for (int i = 0; i < articleSet.articlse.length;i++){
if (articleSet.articlse[i]!= null&&(i+1)==card){
int j=i;
while (articleSet.articlse[j+i]!=null){
articleSet.articlse[j]=articleSet.articlse[j+i];
j++;
}
articleSet.articlse[j] = null;
flag = true;
break;
}else {
flag = false;
}
}
if (flag){
System.out.println("歸還成功");
}else {
System.out.println("歸還失敗临庇，號碼錯誤，請重新操作昵慌！");
}
}public void leaderboard() {
Article[] articles = new Article[50];
for (int i = 0; i < articles.length; i++) {
if (ArticleSet.articles[i] != null) {
articles[i] = ArticleSet.articles[i];
}
}
for (int i = 0; i < articles.length - 1; i++) {
for (int j = 0; j < articles.length - i - 1; j++) {
if (articles[j].number < articles[j + 1].number) {
Article temoArticle = articles[j];
articles[j] = articles[j + 1];
articles[j + 1] = temoArticle;
}
}
}
System.out.println("*******************************");
System.out.println("名次\t銷售量\t商品名稱");
for (int i = 0 ; i < articles.length;i++){
if (articles[i]!= null){
System.out.println( + 1 + " \t" +articles[i].number + "\t"+ articles[i].name);
}
}
}
}
代碼有部分錯誤假夺，我會加以改正
