Java Reference
In-Depth Information
Just as there are two kinds of set implementations, the Java library has two
implementations for maps:
HashMap
and
TreeMap
. Both of them implement the
Map
interface (see
Figure 4
).
The
HashMap
and
TreeMap
classes both implement the
Map
interface.
After constructing a
HashMap
or
TreeMap
, you should store the reference to the
map object in a
Map
reference:
Map<String, Color>
favoriteColors = new
HashMap<String, Color>
();
Figure 3
A Map
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