/*

 * 定义个字符串数组，保存图书信息

 *

 */

import java.util.Scanner;

public class BookManeger {

public static void main(String[] args) {

String[] books = {"C语言","计算机网络","Java数据库高级教程","编程之美","英语四六级"};

BookManeger myBook = new BookManeger();

Scanner sc = new Scanner(System.in);

while(true){

System.out.println("输入命令：1-输入图书名称查询，2-输入图书序号查询");

int m = inputNum();

try{

switch(m){ 

case 1:

System.out.println("请输入图书名称:");

String str = (new Scanner(System.in)).next();

myBook.findBooks(str, books);

break;

case 2:

System.out.println("请输入图书序号:");

int num = (new Scanner(System.in)).nextInt();

myBook.findBooksName(num, books);

break;

default:

System.out.println("输入命令错误:");

continue;

}

break;

}catch(Exception e){

System.out.println(e.getMessage());

continue;

}

}

}

//输入图书名称进行查询

public void findBooks(String input,String books[]) throws Exception

{

for ( int i=0; i<books.length; i++){

if ( input.equals(books[i]) ){

System.out.println("图书名称为:"+books[i]);

return;

}

}

throw new Exception("哈哈，您输入的书本不存在！！");

}

//输入图书序号查询

public void findBooksName(int input,String books[]) throws Exception

{

if ( input<books.length && input >=0){

System.out.println("对应的图书为:"+books[input]);

}

else{

throw new Exception("请输入正确的图书序号,不存在此序号的图书");

}

}

public static int inputNum()

{

try {

int k = new Scanner(System.in).nextInt();

return k;

} catch (Exception e) {

// TODO Auto-generated catch block

System.out.println("请按照提示，输入正确的指令");

int  k = new Scanner(System.in).nextInt();

return k;

}

}

}