package com.imooc.book;
import java.util.InputMismatchException;
import java.util.Scanner;
public class Book {
String bName;
int bNum;
public static Book[]bookList =
new Book[
5];
public Book(){
}
public Book(String name,
int num){
bName = name;
bNum = num;
}
public void FindByName(String name){
for(
int i=
0;i<bookList.length;i++){
if(bookList[i].bName.equals(name)){
System.
out.println(
"book:"+name);
return;
}
}
System.
out.println(
"图书不存在");
}
public void FindByNum(
int num){
for(
int i=
0;i<bookList.length;i++){
if(bookList[i].bNum==num){
System.
out.println(
"book"+bookList[i].bName);
return;
}
}
System.
out.println(
"图书不存在");
}
public static void main(String[]args){
Book book =
new Book();
Book.bookList[
0]=
new Book(
"高数",
1);
Book.bookList[
1]=
new Book(
"大物",
2);
Book.bookList[
2]=
new Book(
"线代",
3);
Book.bookList[
3]=
new Book(
"英语",
4);
Book.bookList[
4]=
new Book(
"化学",
5);
while(
true){
System.
out.println(
"输入命令：1-按照名称查找图书；2-按照序号查找图书");
Scanner scan =
new Scanner(System.
in);
try{
int cmd = scan.nextInt();
scan.nextLine();
switch(cmd){
case 1:
System.
out.println(
"输入图书名称：");
String name = scan.nextLine();
book.FindByName(name);
scan.close();
break;
case 2:
System.
out.println(
"输入图书序号：");
int num = scan.nextInt();
scan.nextLine();
book.FindByNum(num);
scan.close();
break;
default:
System.
out.println(
"命令输入错误！请根据提示输入数字命令！");
}
}
catch(InputMismatchException e){
System.
out.println(
"命令输入错误！请根据提示输入数字命令！");
}
}
}
}
注意Scanner类的nextInt函数，只会取走数字，不会取走‘\r’导致下一次next()函数得到的是‘\r’，而不是要取的内容。
