import java.awt.TexturePaint;

import java.util.InputMismatchException;

import java.util.Scanner;

public class error extends Exception {

String maths="高數(shù)";

String linux="操作系統(tǒng)";

? ??

? ? ?public void test(){

? ? for(;;) {

? ? try{?

System.out.println("1.按名稱查找。2.按序號查找");

Scanner imput=new Scanner(System.in);

? ? ? ? int num=imput.nextInt();

if(num==1){

System.out.println("請輸入名稱：");

Scanner book=new Scanner(System.in);

String boo=book.next();

if(boo.equals("高數(shù)")){

System.out.println("書籍為高數(shù)");

}

}

if(num==2){

}

? ? }catch (InputMismatchException e) {

System.out.println("請輸入1或者2");

continue;

? ? }

? ? break;

? ? }

? ? ?}

public static void main(String[] args) {

error i=new error();

i.test();

}

}