1 package org.zln.exception; 2  3 /** 4  * Created by coolkid on 2014/12/28 0028. 5  */ 6  7 class LanPingException extends Exception{ 8     LanPingException(String msg){ 9         super(msg);10     }11 }12 13 class MaoYanException extends Exception{14     MaoYanException(String msg){15         super(msg);16     }17 }18 19 class Computer{20     private int state = 2;21     public void run() throws LanPingException, MaoYanException {22         if (state == 1){23             throw new LanPingException("电脑蓝屏了");24         }else if (state == 2){25             throw new MaoYanException("电脑冒烟了");26         }27         System.out.println("电脑运行");28     }29 }30 31 class Teacher{32     private String name;33     private Computer computer;34 35     public Teacher(String name) {36         this.name = name;37         computer = new Computer();38     }39 40     public void prelect() throws LanPingException, MaoYanException {41         computer.run();42         System.out.println("讲课");43     }44 }45 public class ExceptionTest {46     public static void main(String[] args) throws LanPingException, MaoYanException {47         Teacher teacher = new Teacher("毕老师");48         teacher.prelect();49     }50 }