EVALUATION

after evaluatio I've came to the followin way to change the code to postpone
the initialization:

1. I've changed DropTarget to initialize flavorMap field in ctor, since 
otherwise we could initialize it (as inline initializer) and then 
rewrite it in ctor.

2. I've decided to not postpone initialization of flavorMap field (as 
Igor suggested) since getDefaultFlavorMap() uses context class loader of 
the current thread, thus calling the same method from another thread may 
have different result.  So, theoretically, such change may cause 
regression if someone uses this particular aspect of the current 
behavior. Instead of postponing initialization of flavorMap, I've 
decided to make SystemFlavorMap lazily initialized.

For this reason I've extracted all code we had in ctor of this class to 
new method initSystemFlaforMap().  And since it initializes two fields: 
flavorToNative and nativeToFlavor, I've changed code to not access these 
fields directly, but use accessors instead and these accessors call 
initSystemFlavorMap() if needed.
                                     

EVALUATION

Need to find all the places in DnD code like the described one. The fix should be also portable back to 6u? releases.
                                     

SUGGESTED FIX

*** DropTarget.java Tue Sep  4 21:37:42 2007
--- DropTarget.java.fix Tue Sep 11 16:07:39 2007
***************
*** 460,466 ****
       * @return the FlavorMap for this DropTarget
       */
  
!     public FlavorMap getFlavorMap() { return flavorMap; }
  
      /**
       * Sets the <code>FlavorMap</code> associated
--- 460,470 ----
       * @return the FlavorMap for this DropTarget
       */
  
!     public FlavorMap getFlavorMap() { 
! 		if (flavorMap == null)
! 			flavorMap = SystemFlavorMap.getDefaultFlavorMap();
! 		return flavorMap; 
! 	}
  
      /**
       * Sets the <code>FlavorMap</code> associated
***************
*** 851,855 ****
       * The FlavorMap
       */
  
!     private transient FlavorMap flavorMap = SystemFlavorMap.getDefaultFlavorMap();
  }
--- 855,859 ----
       * The FlavorMap
       */
  
!     private transient FlavorMap flavorMap;
  }