java - Sending the same but modifed object over ObjectOutputStream -

-

i have following code shows either bug or misunderstanding on part.

i sent same list, modified on objectoutputstream. once [0] , other [1]. when read it, [0] twice. think caused fact sending on same object , objectoutputstream must caching them somehow.

is work should, or should file bug?

 import java.io.*; import java.net.*; import java.util.*;  public class oos {      public static void main(string[] args) throws exception {         thread t1 = new thread(new runnable() {             public void run() {                 try {                     serversocket ss = new serversocket(12344);                     socket s= ss.accept();                      objectoutputstream oos = new objectoutputstream(s.getoutputstream());                     list same = new arraylist();                     same.add(0);                     oos.writeobject(same);                     same.clear();                     same.add(1);                     oos.writeobject(same);                  } catch(exception e) {                     e.printstacktrace();                 }             }         });         t1.start();          socket s = new socket("localhost", 12344);         objectinputstream ois = new objectinputstream(s.getinputstream());          // outputs [0] expected         system.out.println(ois.readobject());          // outputs [0], expected [1]         system.out.println(ois.readobject());         system.exit(0);     } }

the stream has reference graph, object sent twice not give 2 objects on other end, one. , sending same object twice separately give same instance twice (each same data - you're seeing).

see reset() method if want reset graph.


Comments

Post a Comment

Popular posts from this blog

Fail to load namespace Spring Security http://www.springframework.org/security/tags -

-
i have problem namespace of spring security on xhtml page. don't understand why can't load uri, , have following issue: whitelabel error page application has no explicit mapping /error, seeing fallback. tue jul 21 16:58:12 utc 2015 there unexpected error (type=not found, status=404). please need help! possible uri has been changed? best regards you using incorrect namespace url. correct url http://www.springframework.org/schema/security the error page seeing spring source website since not recognize url. try visiting http://www.springsource.org/security/tags in browser update : spring security tags used in jsp page correct tag lib declaration is: <%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
Read more

sql - MySQL query optimization using coalesce -

-
can explain me why second query faster first? (first 1 takes around 40 seconds, second 1 less 0.1) select releases.feature_code, releases.platform_id, version, release_date, general_available, uri, filesize, display_name, feature_name.full_name, if ((select exists(select 1 release_exceptions releases.feature_code = release_exceptions.feature_code , releases.platform_id = release_exceptions.platform_id , releases.version = release_exceptions.version) = 1), 1, 0) release_exceptions releases left outer join platform using(platform_id) left outer join feature_name using(feature_code) order version desc; ~~~ query 2 ------------------ ~~~ select feature_code, version, release_date, general_available, platform_id, uri, filesize, display_name, feature_name.full_name, coalesce(release_exceptions, 0) release_exceptions mus.releases left outer join ( select distinct feature_code, version, platform_id, 1 release_exceptions mus.release_exceptions ) release_exceptions using ...
Read more

unity3d - Unity local avoidance in user created world -

-
i'm using unity3d networked multiplayer online game have large complex 3d terrain scene forest, trees, cliff, hills, mountains, bounders, etc. players can build structures sort of minecraft, , put them anywhere in scene, or move them around anytime. aside human controlled players, there automated ai players , objects animals roaming around scene following path. the problem how make these automated ai players , animals, able navigate around static , dynamic player created structures, because path follow can blocked player created structures, or other players , other ai objects, cliffs etc. have find away around them or on track if tumble down off high cliff example. so made navmesh , used navagents, takes care of static, non moving objects, how make ai players navigate around each other , dynamic structures created players can number in hundreds? i thought of adding navmeshobstacle everything, result in being attached hundreds of objects since user created structures b...
Read more