Re: Could you help on this reflection technique?

I try to use interface Mapper approach to evoke action dynamically. But
I ran into an error:

//in the very top of my program
interface Mapper {
     public void menuItemAction();
}

.....

public void actionPerformed(ActionEvent e)
     {
         String actionCommand = e.getActionCommand(); //get the string
"save1", or "save2", or "get1", or "get2", etc.

    //Try to evoke different action dynamically, but:
         ((Mapper)actionCommand).menuItemAction(); //Error: cannot cast
a String into a Mapper
     }

     //Mapper definitions block
     {
         Mapper save1 = new Mapper()
         {
             public void menuItemAction()
             {
                 memo1 = theText.getText();
             }
         };

         Mapper save2 = new Mapper()
         {
             public void menuItemAction()
             {
                 memo2 = theText.getText();
             }
         };

         Mapper get1 ....

      }//end of Mapper definition block

Thank you very much for your help. I greatly appreciate it.