Demonstrate iterators. : Iterator « Collections Data Structure « Java

Java
1. 2D Graphics GUI
2. 3D
3. Advanced Graphics
4. Ant
5. Apache Common
6. Chart
7. Class
8. Collections Data Structure
9. Data Type
10. Database SQL JDBC
11. Design Pattern
12. Development Class
13. EJB3
14. Email
15. Event
16. File Input Output
17. Game
18. Generics
19. GWT
20. Hibernate
21. I18N
22. J2EE
23. J2ME
24. JDK 6
25. JNDI LDAP
26. JPA
27. JSP
28. JSTL
29. Language Basics
30. Network Protocol
31. PDF RTF
32. Reflection
33. Regular Expressions
34. Scripting
35. Security
36. Servlets
37. Spring
38. Swing Components
39. Swing JFC
40. SWT JFace Eclipse
41. Threads
42. Tiny Application
43. Velocity
44. Web Services SOA
45. XML
Java Tutorial
Java Source Code / Java Documentation
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java » Collections Data Structure » IteratorScreenshots 
Demonstrate iterators.
    

import java.util.ArrayList;
import java.util.Iterator;
import java.util.ListIterator;

class IteratorDemo {
  public static void main(String args[]) {
    ArrayList<String> al = new ArrayList<String>();

    al.add("C");
    al.add("A");
    al.add("E");
    al.add("B");
    al.add("D");
    al.add("F");

    Iterator<String> itr = al.iterator();
    while (itr.hasNext()) {
      String element = itr.next();
      System.out.print(element + " ");
    }

    ListIterator<String> litr = al.listIterator();
    while (litr.hasNext()) {
      String element = litr.next();
      litr.set(element + "+");
    }

    itr = al.iterator();
    while (itr.hasNext()) {
      String element = itr.next();
      System.out.print(element + " ");
    }

    while (litr.hasPrevious()) {
      String element = litr.previous();
      System.out.print(element + " ");
    }
  }
}

   
    
    
  
Related examples in the same category
1. Listing the Elements of a Collection
2. De-mystify the Iterator interface, showing how to write a simple Iterator for an Array of Objects
3. Iterate over Set
4. Use the for-each for loop to cycle through a collection.
5. List IteratorList Iterator
6. Iterate a Collection and remove an item (Exception, wrong version)
7. Use an Iterator and remove the item with Iterator.remove()
8. An Iterator wrapper for an Enumeration.
9. EmptyIterator is an iterator which is empty.
10. Implements an java.util.Iterator over any array
11. Treat an Iterator as an Iterable
12. Iterator class for sparse values in an array.
13. Iterator class for values contained in an array range.
14. Array Iterator
15. Cyclic Iteration
16. Create singleton Iterator
17. Empty Iterator
18. An Iterator that wraps a number of Iterators
19. An Iterator to iterate over the elements of an array
20. Sorted Iterator
21. Iterator Union of Iterators
22. Iterator Utils
23. Linked Iterator
24. Prefetch Iterator
25. Protects an given iterator by preventing calls to remove().
26. An Iterator that returns the elements of a specified array, or other iterators etc.
27. An Iterator wrapper for an Object[], allow us to deal with all array like structures in a consistent manner.
28. An array iterator
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.