java - Should the creation and instantiation of threads always be in the driver class? -


i have 0 experience multi-threading , know if should creating instances , starting each thread in driver class each object of other classes in project? guess need know , bad technique creating threads?

for example, there 3 classes, a, b , driver. can make , start thread instance of class in driver, , since class creates objects of class b in code (no objects of class b directly instantiated or used in driver), can create threads class b within class a? may poor design on part said, attempting learn new things here. in advance!

yes, can create threads anywhere want -- including in thread spawned inside thread spawned driver class.

there are, however, few things need really learn if going thread-ception (you see did?) , daemon , user thread is.

you said driver not have access running thread b. if running thread no longer needed , driver wants stop it? should b stop or not ? comes play whether b daemon thread or not.

multithreading deep subject books dedicated 1 topic. :-) take deep breath cause have long way ahead of you.

i linking 2 tutorials like:
1. vogella: http://www.vogella.com/articles/javaconcurrency/article.html
2. oracle: http://docs.oracle.com/javase/tutorial/essential/concurrency/


Comments

Post a Comment

Popular posts from this blog

java.util.scanner - How to read and add only numbers to array from a text file -

i'm learning java , have question regarding reading file want read numbers file contains strings well. here example of file: 66.56 "3 java 3-43 5-42 2.1 1 and here coding: public class test { public static void main (string [] args){ if (0 < args.length) { file x = new file(args[0]); try{ scanner in = new scanner( new fileinputstream(x)); arraylist<double> test = new arraylist<>(); while(in.hasnext()){ if(in.hasnextdouble()){ double f=in.nextdouble(); test.add(f);} else {in.next();} } catch(ioexception e) { system.err.println("exception during reading: " + e); } } my problem add 66.56,2.1 , 1 doesn't add 3 after "3 or ignores 3-43 , 5-42 can tell me how skip strings , add doubles here? thanks all said 3 ie; "3, 3-43 , 4-42 strings either u read string , split , check number @ " , - or put in space between characters , integers. jvm after compilation tre...
Read more

rewrite - Trouble with Wordpress multiple custom querystrings -

i'm working on adding multiple querystring , doesn't seem work. i've found codes seems work others might i'm missing something. i want like: http://mydomain.com/board/?getyear=2013&getsometext2=sometext to http://mydomain.com/board/2013/sometext/ i added code below functions.php file. doesn't seem work should though. this works. echoing querystring gets both variable without problem. http://mydomain.com/board/2013/sometext/ but doesn't. tested querystring vis isset() seems nothing being set/get http://mydomain.com/board/2013/ function add_query_vars($vars) { $vars[] = "getyear"; $vars[] = "getsometext2"; return $vars; } add_filter('query_vars', 'add_query_vars'); function add_rewrite_rules($arules) { $anewrules = array('board/([^/]+)/([^/]+)/?$' => 'index.php?pagename=board&getyear=$matches[1]&getsometext2=$matches[2]'); $arules = $a...
Read more