attacker.java

本书以大量精简的实例介绍了Java安全性编程方面的概念和技术

class Attacker implements  UserCode{
//     Attacker at=new Attacker( );;
     public MyDate getMyDate(){
            MyDate2 d=new MyDate2();
            MyDate t=d;
             return(t);
      }
/*         public static  UserCode getInstance( ){
               return(at);
         }
*/

}


class MyDate2 extends MyDate{
   public int getYear(){
         return(3000);
    }
}