import?java.util.Scanner;
public?class?Book?{
?
?/**
??*?@param?args
??*/
?public?static?void?main(String[]?args)?{
??//?TODO?Auto-generated?method?stub
??Scanner?input=new?Scanner(System.in);
??System.out.println("歡迎來到書庫");
?//定義圖書數組
??final?int?[]?booknum?={1,2,3,4,5};
??final?String?[]?bookname={"c++","java","計算機基礎","匯編語言","算法"};
?//展示編號和圖書
??for(int?i=0;i<5;i++)
??System.out.println(booknum[i]+"\t"+bookname[i]+"\t");
?//選擇方式
??System.out.println("請輸入查詢方式的編號！1.按照編號查詢?2.按照書名查詢");
??try{
??String?number=input.next();
?//進行選擇
??switch(number){
??case?"1":??//1編號查詢
???System.out.println("請輸入編號");
???nums(bookname);
???break;
??case?"2":??//2書名查詢
???System.out.println("請輸入書名");
???names(bookname);
???break;
??default:??//輸入錯誤
???System.out.println("輸入錯誤,請輸入正確數字");
??}
??}catch(Exception?aaa){
???System.out.println(aaa.getMessage());
??}
??
}
?
?//編號查詢方法
?public?static?void?nums(String?[]?bookname){
??Scanner?in=new?Scanner(System.in);
??try{
???int?a=in.nextInt();
???System.out.println("給你"+bookname[a-1]);
??}catch(Exception?a){
???System.out.println("無此書");
??}
?}
?
?//名字查詢方法
?public?static?void?names(String?[]?bookname)
???throws?Exception{
??Scanner?in=new?Scanner(System.in);
???String?b=in.nextLine();
???for(int?i=0;i<bookname.length;i++){
????if?(b.equals(bookname[i]))
????System.out.println("給你"+bookname[i]);
???}throw?new?Exception("暫無此書");
?}?
?}