Java Collections-Cases

1, ArrayList collection, contains rewrite:

2. Vectors use enumerations to iterate through the collection

3. List-specific iterators

4. HashSet collection, storing custom data types, requiring overriding hashcode () and Equals () methods

5. TreeSet Collection stores custom data types, overriding comparisons

Comparable interface: Comparato method:

Comparator interface:

6, Collections Tool class:

7. Traverse the Map collection:

1.

2.

Java Collections-Cases