exp2.java

package EmpCollection;

import java.util.*;     

public class exp2 {    
     public static void main(String[] args){    
          HashMap h2=new HashMap();    
          for(int i=0;i<10;i++)    
               h2.put(new Element(i), new Figureout());    
          System.out.println("h2:");    
          System.out.println("Get the result for Element:");    
          Element test=new Element(5);    
          if(h2.containsKey(test))    
               System.out.println((Figureout)h2.get(test));    
          else   
               System.out.println("Not found");    
     }    
}    
   
class Element{    
     int number;    
     public Element(int n){    
          number=n;    
     }     
}    
   
class Figureout{    
     Random r=new Random();    
     boolean possible=r.nextDouble()>0.5;    
     public String toString(){    
          if(possible)    
               return "OK!";    
          else   
               return "Impossible!";    
     }    
}