Look up a Definition: getEntry (line 48)
delegate to TreeMap get method, passing String word
as the argument (line 50)
cast retrieved anonymous
object to Definition
return the Definition (null if not found)
How large is this
Dictionary? getSize (line 61)
delegate to TreeMap size method
Whats a Definition?
just one String field, set in
constructor, access by public getter (toString)
would be richer in a real
dictionary (pronunciation, etymology,
)