图书管理的异常处理

Question

package com.exception;public class ExceptionTest { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Book[] book={new Book(1,"高数"),new Book(2,"论语"),new Book(3,"英语"),new Book(4,"编程"),new Book(5,"语文")}; BookAdmin ba=new BookAdmin(); int command=ba.inputCommand(); 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"); try{ switch(command){ case 1: String book1=ba.getBookByName(book); System.out.println("book:"+book1); break; case 2: String book2=ba.getBookByName(book); System.out.println("book:"+book2); break; case -1: System.out.println("命令输入错误！请根据提示输入数字命令！"); continue; default: System.out.println("命令输入错误！"); continue; } }catch(Exception e){ System.out.println(e.getMessage()); } } }}哪位大神帮忙看看怎么运行的时候啥输出都没有。调用方法写在另一个类里了，程序也没报错。跪求大神指导

Answer 1

while(true)..  就是让程序一直循环啊

Answer 2

多打印System.out输出。

while(true)..  这个true定义了？