Interfaces in java pgm

Interfaces

interface Lookup

{

  

    Object find(String name);

}

void processValues(String[] names, Lookup table)

{

        for (int i = 0; i ! names.length; i++)

{

        Object value = table.find(names[i]);

        if (value != null)

        processValue(names[i], value);

   }

}

class SimpleLookup implements Lookup

{

       private String[] Names;

       private Object[] Values;

 public Object find(String name)

{

      for (int i = 0; i < Names.length; i++)

{

             if (Names[i].equals(name))

             return Values[i];

      }

             return null;

   }

  

}