Finally, Collections
Problem
You’re having trouble keeping track of all these lists, sets, and iterators.
Solution
There’s a pattern to it. See Figure 7-3 and Table 7-2.
Discussion
Figure 7-3, in the fashion of the package-level
class diagrams in the Java in a Nutshell books,
shows the collection-based
classes
from package java.util.
Figure 7-3. The Collections Framework
See Also
The Javadoc documentation on Collections,
Arrays, List,
Set, and the classes that implement them provides
more details than there’s room for here. Table 7-2 may further help you to absorb the regularity
of the Collections Framework.
Table 7-2. Java Collections
|
Interfaces |
Implementations Resizable array |
Hashed table |
Linked list |
Balanced tree |
|---|---|---|---|---|
Set |
HashSet |
TreeSet | ||
List |
ArrayList, Vector |
LinkList | ||
Map |
HashMap, Hashtable |
TreeMap |
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