import java.util.*;

public class findBook {

private String[] bookName={"高数","英语","C"};

private Scanner input = new Scanner(System.in);

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

findBook bk=new findBook();

while(true){

System.out.println("输入命令：1-按照书名查找图书，2-按照序号查找图书");

try{

int num=bk.getCommond();

switch(num){

case 1:

bk.name();

break;

case 2:

bk.Number();

break;

case -1:

System.out.println("请输入指定的数字");

break;

default:

System.out.println("输入错误！！！");

break;

}

}catch(Exception e){

System.out.println("请重新输入");

continue;

}

}

}

public int getCommond(){

int num;

try{

num=input.nextInt();

return num;

}catch(Exception e){

input.next();

return -1;

}

}

//按照书名查找

public void name() throws Exception{

String strname;

System.out.print("请输入书名:");

//input.nextLine();

strname=input.nextLine();     //如果输入用nextLine的话就无法接收到输入？？？

for(int i=0;i<3;i++){

if(strname.equals(bookName[i])){

System.out.println("找到了"+strname);

return;

}

}

throw new Exception("图书不存在！");

}

//按照序号查找

public void Number()throws Exception{

while(true){

System.out.println("请输入书号：");

try{

int index=input.nextInt();

System.out.println("找到了"+bookName[index]); 

}catch(ArrayIndexOutOfBoundsException e){

System.out.println("图书不存在");

throw new Exception("BookNotExist");

}catch(Exception e){

System.out.println("输入格式错误，请根据提示输入！！！");

input.next();

continue;

}

}

}

}