What are the different collection classes of java

[Sacchidananda]

Hi All,

I just completed my 'C++' programming and started 'JAVA'. I am aware about the collection classes of 'C++'. But I want know what are the different collection classes of java.

Is anybody know about the collection classes? Please provide me the information regarding different collection classes which is available in 'JAVA'. Your help will be greatly appreciable...

[Reegan]

Hi friend,

According to my java knowledge following are the different collection classes available in java:

*. Arrays

*. Containers/Collections
.......*. List(Arraylist, Linkedlist)
.......*.Set(Hashset, Treeset)
.......*. Collection
.......*. Map( Hashmap, Treemap)

*. Iterators

[opaper]

Hi,

Following are the different collection classes of java which I used:

1. AbstractCollection
2. java.lang.reflect.Array
3. Arrays
4. HashMap
5. Collections
6. javax.swing.tree.DefaultTreeModel
7. Hashtable
8. ArrayList
9. LinkedList
10. Vector
11. TreeSet

Please try to use these different collection classes.

[MindSpace]

In java collections classes are the collections of objects grouped together using characteristic which is common.
Collection is a most common basic collection interface. This collection interface provides the generic usage of the collection to the user:

See below example:

import java.util.Collection; // Interface
import java.util.ArrayList; // Implementation
import java.util.HashSet; // Implementation
...
Collection coll_demo1 = new ArrayList();
Collection coll_demo2 = new HashSet();
...
< Use coll_demo1 & coll_demo2 >