Comments on: Double Brace Initialization

By: Isa Goksu

Isa Goksu — Fri, 29 May 2009 23:37:31 +0000

@Balaji, I would use Varargs if I'm not using double brace.

By: Balaji

Balaji — Fri, 29 May 2009 14:41:58 +0000

Very nice! I’ve been wondering about double brace lately. Do you have any thoughts about using Array lists instead?

By: Paul Holser

Paul Holser — Fri, 29 May 2009 14:36:57 +0000

Yep –> http://pholser.com/writings/concisions.html

By: Isa Goksu

Isa Goksu — Thu, 28 May 2009 21:25:33 +0000

Yeah that’s true. I wouldn’t use it too under a high performance requirement. This is just a nice trick for mostly unit-tests (at least I’m using for that). Then again it’s another discussion about performance/memory since after Java 6, “new” is not causing almost any performance problems. For memory, I’d say this code snippet doesn’t cause any memory-leaks, and for the rest memory is so cheap. I don’t think it’d be an issue :)

By: Stefan

Stefan — Thu, 28 May 2009 21:01:32 +0000

It’s a cool trick – but I wouldn’t use it unless someone proves me that the impact on memory usage and VM performance isn’t too bad (you’re creating a new subclass when you actually want a new instance). BTW what’s so bad about Arrays.asList(”ITEM 1″,”ITEM 2″,”ITEM 3″)?