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How badly do you want Hotswap to improve?

Since JDK 1.4, it is possible to reload the implementation of class methods with newer versions, without restarting the application. This is called Hotswap. However, any change to the structure of your class is not supported and requires a complete restart.

Developers are more and more seeing the advantage of scripting languages for development and part of the reason is the fact that any change can immediately be seen in a running application.

It is technically possible to improve the Hotswap feature. Sun is looking for feedback about this, so that they can evaluate if it's worth dedicating resources to:

Are people really looking to do arbitrary changes and instance conversion? We view type safety and application consistency as very important. One approach is to relax the restrictions and allow for some limited changes - for example, the ability to add methods would address many scenarios. We aren't making any commitments at this time but we are looking for feedback.

If you have any suggestions or comments, join the discussion at Sun's developer network.

posted by Geert Bevin in Java on Oct 31, 2005 12:55 PM : 3 comments [permalink]
 

Comments

Re: How badly do you want Hotswap to improve?
Thanks for keeping up with the awareness on this. I plan to encourage people to talk about it every few weeks in various outlets (bug reports, blog entries, mailing lists, etc). We should encourage others to do the same. It looks like Sun is starting to realize this issue isn't going away.
Re: How badly do you want Hotswap to improve?
That's what I was planning on doing too ;)
Re: How badly do you want Hotswap to improve?
count me in, until we meet again:D

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