照著老師說的做能看懂，可實戰(zhàn)還是懵逼....求各位幕友助攻

開發(fā)一個控制臺程序，要求控制臺輸出以下內(nèi)容：

開發(fā)一個無數(shù)據(jù)庫的圖書館管理系統(tǒng)，圖書管理系統(tǒng)包括的事務有：添加借書人信息，添加圖書到圖書館系統(tǒng)，借圖書，還圖書。

操作業(yè)務順序要求：

1. 輸入要被圖書館保存的圖書。

2. 控制臺輸出當前圖書館保存圖書的書名，以及藏書總數(shù)。

3. 再輸入自己的姓名。

4. 借出圖書館中已保存的某本圖書。

5. 控制臺打印輸出借書者詳細信息，以及當前圖書館中剩余圖書的的總數(shù)，并輸出剩余圖書的書名。

寂寞狂歡1

2017-04-24

源自：Java入門第三季 4-7

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2 回答

慕雪4878626 回答被采納 +3 積分
2017-04-24

拿類似的代碼多練，練到10遍以上，就再不蒙了

0 回復有任何疑惑可以回復我~

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DragonMaid
2017-04-25

我試著按要求寫了一下??不知道合不合?要求。。。
****************第一個Book類******************
package?libBook;

import?java.util.Stack;

/**
?*?Created?by?Administrator?on?2017/4/25.
?*/
public?class?Book?{
????public?String?BookName??;
????public?String?BPersonName?;
????public?String?index;
????public?int?flag;

????public?Book(String?BookName,String?BPersonName,String?index,int?flag)
????{
????????this.BookName?=?BookName;
????????this.BPersonName?=?BPersonName;
????????this.index?=?index;
????????this.flag?=?flag;
????}
????public?Book()
????{

????}
}

*************************第二個Main類***********************
package?libBook;

import?java.util.ArrayList;
import?java.util.List;
import?java.util.Scanner;

/**
?*?Created?by?Administrator?on?2017/4/25.
?*/
public?class?Main?{
????Scanner?console?=?new?Scanner(System.in);
????public?List<Book>?BookList?;
????public??String?index_1?;
????public??int?index_2?=?0;
????public?int?index_3?=?0;

????public?Main()
????{
????????this.BookList?=?new?ArrayList<Book>();
????}

????public?void?inBook()
????{
????????while(true)
????????{
????????????System.out.println("請輸入您要存入圖書的名字(輸入end結(jié)束存書)：");
????????????String?Book_1?=?(String)?console.next();
????????????index_1?=?String.valueOf(BookList.size()+1);

????????????if?(Book_1.equals("end")?)
????????????{
????????????????System.out.println("結(jié)束存書?。。?);
????????????????break;
????????????}
????????????Book?Book1?=?new?Book(Book_1,null,index_1,0);
????????????BookList.add(Book1);


????????}

????}

????public?void?inForEach()
????{
????????System.out.println("一共存了："+BookList.size()+"本書??！");
????????System.out.println("分別是：");
????????for(Book?Bk?:?BookList)
????????{
????????????if(Bk.flag?!=?1)
????????????{
????????????????System.out.println(Bk.index+"."+Bk.BookName);
????????????}
????????}
????}

????public?void?outBook()
????{
????????System.out.println("請輸入借書人姓名:");
????????String?perName?=?console.next();
????????while(true)
????????{
????????????System.out.println("請輸入要借書的序號(輸入end結(jié)束借書)：");
????????????String?ID?=?console.next();
????????????if(ID.equals("end"))
????????????{
????????????????System.out.println("結(jié)束借書！！");
????????????????break;
????????????}
????????????????int?ID2?=?Integer.parseInt(ID);
????????????????index_2?=?index_2+1;

????????????????Book?Book2?=?BookList.get(ID2?-?1);
????????????????Book?Book3?=?new?Book(Book2.BookName,?perName,?ID,?1);
????????????????BookList.set(ID2?-?1,Book3);

????????}

????}

????public?void?outForEach()
????{
????????System.out.println("被借的書有："+index_2+"本！！");
????????for(Book?Bk2?:?BookList)
????????{
????????????if(Bk2.flag?==?1)
????????????{
????????????????System.out.println(Bk2.index+"."+Bk2.BookName+",由"+Bk2.BPersonName+"借走啦??！");
????????????}
????????}
????????index_3?=?BookList.size()?-?index_2;
????????System.out.println("還剩下的書有："+index_3+"本?。?！");
????????System.out.println("分別是：");
????????for(Book?Bk3?:?BookList)
????????{
????????????if(Bk3.flag?==?0)
????????????{
????????????????System.out.println(Bk3.index+"."+Bk3.BookName);
????????????}
????????}
????}

????public??static?void?main(String[]?args)
????{
?????????Main?m?=?new?Main();
?????????m.inBook();
?????????m.inForEach();
?????????m.outBook();
?????????m.outForEach();

????}
}