class lanpingException extends Exception

 {

     lanpingException(String msg)

     {

         super(msg);

     }

 }

 class maoyanException extends Exception

 {

     maoyanException(String msg)

     {

         super(msg);

     }

 }

 class Computer

 {

     private int state=2;

     public void run()throws lanpingException,maoyanException

     {

         if(state==1)

         {

             throw new lanpingException("lanping!!!");

         }

         if(state==2)

         {

             throw new maoyanException("maoyan!!!");

         }

         System.out.println("run bat");

     }

     public void reset()

     {

         state=0;

         System.out.println("computer reset!");

     }

 }

 class Teacher

 {

     private String name;

     private Computer comp;

     Teacher(String name)

     {

         this.name=name;

         comp=new Computer();

     }

     public void prelect()throws maoyanException

     {

         try

         {

             comp.run();

             System.out.println(name+" speak");

         }

         catch(lanpingException e)

         {

             System.out.println(e.toString());

             comp.reset();

             prelect();

         }

         catch(maoyanException e)

         {

             System.out.println(e.toString());

             test();

             throw e;

         }

     }

     public void test()

     {

         System.out.println("test yourself!");

     }

 }

 class Kandra

 {

     public static void main(String[] args)

     {

         Teacher pp=new Teacher("cao");

         try

         {

             pp.prelect();

         }

         catch(maoyanException e)

         {

             System.out.println("......");

         }

     }

 }