package?com.imooc.test;

import?java.util.InputMismatchException;
import?java.util.Scanner;

public?class?Exercise?{
	
	private?static?String[]?books?=?{"Java編程思想",?"C語言程序設(shè)計",?"微積分",?"數(shù)據(jù)結(jié)構(gòu)",?"計算機科學(xué)導(dǎo)論"};
	
	public?static?void?main(String[]?args)?{
		
???????Exercise?exercise?=?new?Exercise();
???????exercise.method();
	}
	
	public?void?method()?{
		Scanner?in?=?new?Scanner(System.in);
		System.out.println("輸入命令：1-按照名稱查找圖書；2-按照序號查找圖書");
		try?{
			int?index?=?in.nextInt();
			switch?(index)?{
			??case?1?:
				??System.out.println("輸入圖書名稱：");
				??String?name?=?in.next();
				??for?(?String?s?:?Exercise.books)?{
					??if?(?s.equals(name)?)?{
						??System.out.println("book："+name);
						??return;
					??}
				??}
				??System.out.println("圖書不存在！");
				??method();
				??break;
			??case?2:
				??System.out.println("輸入圖書序號：");
				??try?{
					??int?num?=?in.nextInt();?
					??for?(?String?s?:?Exercise.books)?{
						??if?(?s.equals(Exercise.books[num-1]))?{
							??System.out.println("book："+Exercise.books[num-1]);
							??return;
						??}
					??}
					??System.out.println("圖書不存在！");
					??method();
				??}?catch?(?Exception?e?)?{
					??System.out.println("命令輸入錯誤！請根據(jù)提示輸入數(shù)字命令！");
					??method();?
				??}
				??break;
			}
		}?catch?(?InputMismatchException?input?)?{
			System.out.println("命令輸入錯誤！請根據(jù)提示輸入數(shù)字命令！");
			method();
		}
	}
}