Comments for satukubik

Comment on Java Tips: Memory Optimization for String by Bristol

Bristol — Tue, 06 Jan 2009 13:13:10 +0000

(sorry, I don’t know how my comment got cut off)
…
wouldn’t it be better to use regex if you really really need to have the unique string(s)?

Comment on Java Tips: Memory Optimization for String by Bristol

Bristol — Tue, 06 Jan 2009 13:08:45 +0000

Wouldn’t there be a lookup cost as the pool of unique strings grow?
I’d rather sacrifice a little bit of memory rather than performance.

As for parsing the XML in your example, I understand that it depends on the XML

Comment on Java Tips: Memory Optimization for String by Ariya

Ariya — Tue, 06 Jan 2009 10:22:47 +0000

Beside the above mentioned problem, isn’t this also a performance hit?

Comment on Java Tips: Memory Optimization for String by Stephen Colebourne

Stephen Colebourne — Tue, 06 Jan 2009 10:19:35 +0000

This advice can have bad side-effects. A string object is actually just a view on an underlying char[]. If the char[] is very large, and the view very small (as can often happen with using substring on a large string such as xml) then your advice would end up caching the whole large char[] even though you are only using a small fraction of it. And this is a cache that can never be freed.

In general, String.intern() is a pretty low-level method (originally designed for JVM/compiler caching) and great care should be taken when using it in your own code.

Comment on Java Tips: More About Initializing Collection by Nanda Firdausi

Nanda Firdausi — Mon, 05 Jan 2009 11:10:39 +0000

Like I said in the previous article, you can’t modify the collections if you choose this way. The Javadoc also clearly states that the collection is immutable.

BTW, for your example if you don’t intend to change the list anymore, I like this better:

List s = Collections.singletonList(”First!”);

Comment on Java Tips: More About Initializing Collection by Ronsen

Ronsen — Mon, 05 Jan 2009 11:01:39 +0000

Yup, I use these APIs to avoid NPE, that’s it! But you must always use the concrete classes to use it.

Bad:
List s = Collections.EMPTY_LIST;
s.add(”First!”);

Good:
List s = new ArrayList();
s.add(”First!”);

Comment on Java Tips: Initializing Collection by Java Tips: More About Initializing Collection | satukubik

Java Tips: More About Initializing Collection | satukubik — Mon, 05 Jan 2009 09:53:34 +0000

[...] time ago I wrote an article about initializing collection in Java. I just found that Java actually provides several methods to help this task if you just want to [...]

Comment on What is the smallest positive integer that Google doesn’t know? by Eugene

Eugene — Wed, 22 Oct 2008 21:52:12 +0000

I am seaching for some idea to write in my blog… somehow come to your blog. best of luck. Eugene

Comment on Will Apple redefine portable game market? by Bookmarks about Market

Bookmarks about Market — Thu, 31 Jul 2008 02:45:32 +0000

[...] - bookmarked by 3 members originally found by riiview on July 16, 2008 Will Apple redefine portable game market? http://satukubik.com/2008/07/12/will-apple-redefine-portable-game-market/ - bookmarked by 2 [...]

Comment on Will Apple redefine portable game market? by dani

dani — Mon, 14 Jul 2008 01:01:26 +0000

Iya saya juga setuju dengan aaulia, artikel kamu ini terlalu membesarkan fitur gaming di iphone/ipod yang notabene cuman sekedar tambahan saja untuk pemilik ipod, saya rasa agak susah melakukan komparasi ke suatu alat yang memang dikhusukan untuk game dibandingkan dengan alat multimedia.