package?com.sun.one;
import?java.util.*;
public?class?BookSystem?{
????static?Scanner?input=new?Scanner(System.in);
????static?String[]?bookName={"小王子","追風箏的人","野火集"};
????
????public?static?void?main(String[]?args)?{
????????welcome();
????}
????
????????public?static?void?welcome(){
????????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{
????????switch(input.nextInt()){
????????case?1:
????????????searchName();
????????????break;
????????case?2:
????????????searchNum();
????????????break;
????????default:
????????????System.out.println("命令輸入有誤，請根據提示輸入數字命令");????
????????????input.nextLine();
?????????????welcome();
????????}????
????}catch(Exception?e){
????????????System.out.println("命令輸入有誤，請根據提示輸入數字命令");
????????????input.nextLine();
?????????????welcome();
??????????}
????}
????public?static?void?searchName(){
????????System.out.print("請輸入您要查找的書名：");
????????String?name=input.next();
????????@SuppressWarnings("unused")
????????Boolean?key=false;
????????for(int?i=0;i<bookName.length;i++){
????????????if(name.equals(bookName[i]))
????????????????key=true;
????????????}
????????if(key=true){
????????????????System.out.println("book:"+name);
????????}else{
????????????????System.out.println("圖書不存在！");
????????????????input.nextLine();
????????????????welcome();
????????????}
????????????
????????}
?????
????public?static?void?searchNum(){
????????try{System.out.println("請輸入您要查找的書序號：");
????????int?num=input.nextInt();
????????System.out.println(bookName[num-1]);
????????
????????}catch(InputMismatchException?e){
????????????System.out.println("命令輸入有誤，請根據提示輸入數字命令");
????????????input.nextLine();
????????????searchNum();
????????}catch(Exception?e){
????????????System.out.println("圖書不存在！");
????????????input.nextLine();
????????????welcome();
????????}
????????
????????
????}

}