package com.test.trycatch;
import java.util.*;

public class TryTest {
    
    static Scanner sin = new Scanner(System.in);
    static BookFindTry[] books = {new storyBook(1,"西游记"),new storyBook(2,"红楼梦"),new storyBook(4,"水浒传"),new juvenileBook(49,"三体")};
    
    public static void main(String[] args) {
        try {
            try {
                TryTest.show();
            } catch (InputMismatchException e) {
                /*e.printStackTrace();*/
                System.out.println("命令输入错误！请根据提示输入数字命令！");
                TryTest.show();
            }
        } catch (Exception e) {
                e.printStackTrace();
                System.out.println("抱歉，您查询的图书不存在！或已被其它同学借走！");
                TryTest.show();
        }

    }
    
    private static void show() {
        System.out.println("输入命令查找图书：1-按照名称查找图书；2-按照序号查找图书");
        int intput = sin.nextInt();
        if(intput==1){
            System.out.println("请输入书名：");
            String iputbookname = sin.next();
            for(int i=0;i<books.length;i++){
                if(iputbookname.equals(books[i].bookName)){
                    System.out.println("恭喜您借书《"+books[i].bookName+"》成功！" );
                }else {
                }    
            }
        }else if (intput==2) {
            System.out.println("请输入序号：");
            int iputbookid = sin.nextInt();
            for(int i=0;i<books.length;i++){
                if(iputbookid==books[i].bookId){
                    System.out.println("恭喜您借书《"+books[i].bookName
                            +"》成功！" );
                }else {
                }    
            }
        }
    }
}

这是正确运行程序的结果图，其中每次的输入指令处都有一个try…catch判断是否输入正确，不正确泽返回上一步骤，重新输入。