dcsimg
Login | Register   
LinkedIn
Google+
Twitter
RSS Feed
Download our iPhone app
TODAY'S HEADLINES  |   ARTICLE ARCHIVE  |   FORUMS  |   TIP BANK
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.


advertisement
 

Tip: Understanding CopyOnWriteArrayList

See why using CopyOnWriteArrayList in Java is worth it, despite the performance hit.


advertisement

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


In CopyOnWriteArrayList, operations such as add, remove, etc., are implemented on a copy of the of the array. It definitely impacts performance but the trade-off is that the data remains intact.

import java.util.Iterator;
import java.util.concurrent.CopyOnWriteArrayList;

public class UsingCopyOnWriteArrayList
{
    public static void main(String args[])
   {
        CopyOnWriteArrayList copyOnWriteArrayList = new CopyOnWriteArrayList();
        copyOnWriteArrayList.add("United Status");
        copyOnWriteArrayList.add("France");
        copyOnWriteArrayList.add("China");
      copyOnWriteArrayList.add("Russia");
      copyOnWriteArrayList.add("United Kingdom");
      
        Iterator iteratorForCopyOnWriteArrayList = copyOnWriteArrayList.iterator();
      System.out.println("Iterating CopyOnWriteArrayList");
        while(iteratorForCopyOnWriteArrayList.hasNext()){
         System.out.println("Element : " + iteratorForCopyOnWriteArrayList.next());
        }
    }
}

/*

Expected output:

[root@mypc]# java UsingCopyOnWriteArrayList
Iterating CopyOnWriteArrayList
Element : United Status
Element : France
Element : China
Element : Russia
Element : United Kingdom

*/

 

Visit the DevX Tip Bank

 





   
Sridhar M S. is a Java developer from Bangalore, India. He holds a master's degree in Computer Science.
Comment and Contribute

 

 

 

 

 


(Maximum characters: 1200). You have 1200 characters left.

 

 

Sitemap
Thanks for your registration, follow us on our social networks to keep up-to-date