1 class lanpingException extends Exception 2 { 3     lanpingException(String msg) 4     { 5         super(msg); 6     } 7 } 8  9 class maoyanException extends Exception10 {11     maoyanException(String msg)12     {13         super(msg);14     }15 }16 17 class Computer18 {19     private int state=2;20     public void run()throws lanpingException,maoyanException21     {22         if(state==1)23         {24             throw new lanpingException("lanping!!!");25         }26         if(state==2)27         {28             throw new maoyanException("maoyan!!!");29         }30         System.out.println("run bat");31     }32     public void reset()33     {34         state=0;35         System.out.println("computer reset!");36     }37 }38 39 class Teacher40 {41     private String name;42     private Computer comp;43     Teacher(String name)44     {45         this.name=name;46         comp=new Computer();47     }48     public void prelect()throws maoyanException49     {50         try51         {52             comp.run();53             System.out.println(name+" speak");54         }55         catch(lanpingException e)56         {57             System.out.println(e.toString());58             comp.reset();59             prelect();60         }61         catch(maoyanException e)62         {63             System.out.println(e.toString());64             test();65             throw e;66         }67     }68     public void test()69     {70         System.out.println("test yourself!");71     }72 }73 74 class Kandra75 {76     public static void main(String[] args)77     {78         Teacher pp=new Teacher("cao");79         try80         {81             pp.prelect();82             83         }84         catch(maoyanException e)85         {86             System.out.println("......");87         }88     }89 }