This week's book giveaway is in the OCAJP 8 forum.
We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line!
See this thread for details.
The moose likes Beginning Java and the fly likes Reloading classes Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of OCA Java SE 8 Programmer I Study Guide this week in the OCAJP 8 forum!
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "Reloading classes" Watch "Reloading classes" New topic

Reloading classes

Amer Seifeddine
Ranch Hand

Joined: Apr 25, 2002
Posts: 57
Dear All,

What is the easiest or best way to reload classes while an application is running to reflect the changes? Any link?

Stan James
(instanceof Sidekick)
Ranch Hand

Joined: Jan 29, 2003
Posts: 8791
You can make a new ClassLoader instance that will reload the class to make new object instances. That does nothing to change any instances that already exist, and you have to make sure that any new instances are made through the new loader. Read up on ClassLoader and give it a try. Let us know what you find!

A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi
I agree. Here's the link:
subject: Reloading classes
It's not a secret anymore!