Immutable POJO that Just Works with Jackson

gistfile1.txt

/**
 * This class works just fine, although you might not think so at first glance.
 * Serialization is easy -- just uses getters, after all -- but how about deser?
 * Turns out that:
 *
 * (a) Since Jackson auto-detects private fields (as long as something else indicates 
 *     presence of a property; here getters do it), and
 * (b) JDK (1.5+) allows Reflection to force setting of a 'final' value
 * 
 * it... well, works. Try it for fun!
 */
public class ImmutaBean
{
   private int x, y;

   public int getX() { return x; }
   public int getY() { return y; }
}