【1-9作业】模拟借书系统

package com.imooc.book;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Book {
    public static void main(String[] args) {
        List<String> bookList=new ArrayList();
        bookList.add("西游记");
        bookList.add("红楼梦");
        bookList.add("水浒传");
        bookList.add("三国演义");
        System.out.println("输入命令：1-按照名称查找图书；2-按照序号查找图书");
        int order = 0;
        Scanner scanner=new Scanner(System.in);
        try {
            order = scanner.nextInt();
        } catch (Exception e) {
            System.out.println("命令输入错误！请根据提示输入数字命令");
        }
        switch (order) {
            case 1:
                System.out.println("输入图书名称：");
                String bookName;
                bookName=scanner.next();
                    try{for (int i=0;i<=bookList.size();i++) {
                        String book=bookList.get(i);
                        if(bookName.equals(book)){
                            System.out.println("book:"+book);
                            break;
                        }
                    }}catch (Exception e){
                System.out.println("图书不存在！");}
                    break;
            case 2:
                System.out.println("输入图书序号：");
                int num=0;
                try {
                    num = scanner.nextInt();
                } catch (Exception e) {
                    System.out.println("命令输入错误！请根据提示输入数字命令");break;
                }
                try{
                       System.out.println("book:"+bookList.get(num-1));
                   }catch (Exception e){
                       System.out.println("图书不存在！");
                   }
                break;
            default:
                System.out.println("抱歉，没有此项命令！");
                }
    }
}