package?com.jersey;

import?java.util.*;

import?javax.sql.rowset.spi.SyncFactoryException;


public?class?LibSystem?{
	static?Book[]?books={new?Book("論語","000001"),new?Book("老子","000002"),new?Book("java編程思想","000003")};
	public?static?void?main(String[]?args){

		System.out.println("歡迎來到iLibrary圖書檢索系統！");
		Scanner?input=new?Scanner(System.in);
		System.out.println("請選擇：1.按書名檢索?2.按編號檢索?3.退出系統");
		
		int?n=input.nextInt();
		switch(n){
			case?1:				
				System.out.println("請輸入您所要檢索的圖書名稱");
				String?a=input.next();
				try{
					String?result=SearchByName(a);
					System.out.println("您所選的《"+result+"》已找到");
					}catch(Exception?e){
						e.printStackTrace();
						System.out.println("您檢索的圖書不存在！");
						
					}
					break;
			case?2:
				System.out.println("請輸入您所要檢索的圖書編碼");
				String?b=input.next();
				try{
				String?result2=SearchByCode(b);
				System.out.println("您所選的《"+result2+"》已找到");
				}catch(Exception?e){
					e.printStackTrace();
					System.out.println("您輸入的編碼有誤，請重新輸入！");
				}
				break;
			case?3:
				System.exit(0);
			default:
				System.out.println("您的輸入有誤！請重新輸入！");
		}
		
		}
		
		public?static?String?SearchByName(String?a)?throws?Exception{
			
			for(int?i=0;i<books.length;i++){
				if(a.equals(books[i].name)){
					continue;
				}
				else{
					throw?new?Exception();
				}
				
			}
			return?a;
		}
		public?static?String?SearchByCode(String?b)?throws?Exception{
			String?s2=b;
			for(int?i=0;i<books.length;i++){
				if(b.equals(books[i].code)){
					s2=books[i].name;
					break;
				}
				else{
					throw?new?Exception();
				}
				}
			return?s2;	
	}
	
		
}

諸位還有什么改進的建議也請告訴我，謝謝！