AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  sizeof in java! need help          AppletTalk.com Forum Index -> Java Help View previous topic :: View next topic   Author Message Kulbir Guest Posted: Wed Apr 19, 2006 7:12 am    Post subject: sizeof in java! need help Hi friends, i have one doubt. java does not have sizeof(). so how can i know the size of the objects in java. thanks Back to top Thomas Weidenfeller Guest Posted: Wed Apr 19, 2006 8:12 am    Post subject: Re: sizeof in java! need help Kulbir wrote: Quote: i have one doubt. java does not have sizeof(). so how can i know the size of the objects in java. You don't need it. It's that simple. /Thomas -- The comp.lang.java.gui FAQ: ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/computer-lang/java/gui/faq http://www.uni-giessen.de/faq/archiv/computer-lang.java.gui.faq/ Back to top Andrew McDonagh Guest Posted: Wed Apr 19, 2006 8:12 am    Post subject: Re: sizeof in java! need help Kulbir wrote: Quote: Hi friends, i have one doubt. java does not have sizeof(). so how can i know the size of the objects in java. thanks already addressed in comp.lang.java.programmer. followup set to comp.lang.java.programmer. Back to top Kulbir Guest Posted: Wed Apr 19, 2006 8:12 am    Post subject: Re: sizeof in java! need help yeh i know that but technically reason i behind this. Back to top Ingo R. Homann Guest Posted: Wed Apr 19, 2006 9:12 am    Post subject: Re: sizeof in java! need help Hi, Thomas Weidenfeller wrote: Quote: i have one doubt. java does not have sizeof(). so how can i know the size of the objects in java. You don't need it. It's that simple. Well, the shallow size is quite simple. But how about the "deep size" - that's nontrivial! (*) Ciao, Ingo (*) It's trivial to write a reflection-based method that gets the deep size, but normally, you do not really want the deep size, but something between the flat size and the deep size (**). And that is *very* non-trivial. (**) Mostly, you want to know the size of the object itself plus (recursively) the size of the referenced objects that are not (***) referenced by other references. :-) (***) Except they are referenced by Objects within the same graph. Pheww - example: A / \ B C / | \ \ D | E \ \ | \ / F G Now, the "expected" sizes are (as sum of flat size): A: A+B+C+D+E+F+G B: B+D+E+F (and not G - or perhaps "sizeof(G)/2"?) C: C (...) D: D (...) E: E (...) F: F G: G Note that this is in no way 'transitive'! Ciao, Ingo Back to top Roedy Green Guest Posted: Thu Apr 20, 2006 1:12 am    Post subject: Re: sizeof in java! need help On 19 Apr 2006 00:00:07 -0700, "Kulbir" <kb.singh1978 (AT) gmail (DOT) com> wrote, quoted or indirectly quoted someone who said : Quote: i have one doubt. java does not have sizeof(). so how can i know the size of the objects in java. since the primitive sizes are standard, and since you can't access objects as a whole there is no need of a sizeof. See http://mindprod.com/jgloss/primitive.html -- Canadian Mind Products, Roedy Green. http://mindprod.com Java custom programming, consulting and coaching. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> Java Help All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.