//新建一個(gè)BookSystem類

import java.util.*;

public class BookSystem {

/**

* @param args

* @throws BooknameException?

*/

public static void main(String[] args) throws BooknameException {

// TODO Auto-generated method stub

BookSystem bstem=new BookSystem();

int num1=bstem.input();

if(num1==1){

bstem.booknamer();

}

if(num1==2){

bstem.booknumber();

}

}

public int ? input(){

try {

System.out.println("輸入命令：1-按照名稱查找圖書； 2-按照序號(hào)查找圖書");

Scanner s=new Scanner(System.in);

int inputnum=s.nextInt();

while(inputnum!=1 && inputnum!=2){

System.out.println("命令輸入錯(cuò)誤！請根據(jù)提示輸入指定命令。");

System.out.println("輸入命令：1-按照名稱查找圖書； 2-按照序號(hào)查找圖書");

inputnum=s.nextInt();

}

return inputnum;

} catch (Exception e) {

// TODO: handle exception

System.out.println("命令輸入錯(cuò)誤！請根據(jù)提示輸入數(shù)字命令。");

return input();

}

}

public void booknamer() throws BooknameException{

Bookname bookname=new Bookname();

Scanner s=new Scanner(System.in);

try {

System.out.println("輸入圖書名稱");

bookname.bijiao(s.next());

} catch (BooknameException e) {

// TODO: handle exception

input();

System.out.println("輸入圖書名稱");

bookname.bijiao(s.next());

}

}

public void booknumber()throws BooknameException{

Booknumber booknumber=new Booknumber();

Scanner s=new Scanner(System.in);

try {

System.out.println("輸入圖書序號(hào)");

booknumber.bijiao(s.nextInt());

} catch (BooknameException e) {

// TODO: handle exception

input();

System.out.println("輸入圖書序號(hào)");

booknumber.bijiao(s.nextInt());

}catch (InputMismatchException e) {

// TODO: handle exception

System.out.println("命令輸入錯(cuò)誤！請根據(jù)提示輸入數(shù)字命令。");

booknumber();

}

}?

}

//新建一個(gè)BooknameException類

public class BooknameException extends Exception{

public BooknameException(){

System.out.println("圖書不存在！");

}

}

//新建一個(gè)Bookname類

public class Bookname {

public void bijiao(String name)throws BooknameException{

switch (name) {

case "中華字典":System.out.println("book:中華字典");break;

case "高數(shù)":System.out.println("book:高數(shù)");break;

case "文學(xué)經(jīng)典":System.out.println("book:文學(xué)經(jīng)典");break;

case "趣味物理":System.out.println("book:趣味物理");break;

case "綜合化學(xué)":System.out.println("book:綜合化學(xué)");break;

default:throw new BooknameException();

}

}

}

//新建一個(gè)Booknumber類

public class Booknumber {

public void bijiao(int num)throws BooknameException{

switch (num) {

case 1:System.out.println("book:JAVA應(yīng)用開發(fā)");break;

case 2:System.out.println("book:Android應(yīng)用開發(fā)");break;

case 3:System.out.println("book:C#應(yīng)用開發(fā)");break;

case 4:System.out.println("book:單片機(jī)原理");break;

case 5:System.out.println("book:計(jì)算機(jī)組成原理");break;

default:throw new BooknameException();

}

}

}

輸出結(jié)果圖：