java - sun Httpserver: access from the Handler to an object created externally -

java - sun Httpserver: access from the Handler to an object created externally -

maybe dumb question: i'm trying realize little server in java com.sun.net.httpserver package. @ origin of server programming, i'm missing something.

it should work this:

first, creates object (an hashmap) lately , periodically updated every 24 hours then there handler process requests received. processing phase done basing on content of hashmap, created outside handler.

pseudo code (something dirt)

public static void main(string args[]){ // creation of hashmap (which has periodically updated) httpserver server = httpserver.create(new inetsocketaddress(8000), 0); server.createcontext("/hashmap", new handler()); server.start(); } class handler implements httphandler { public void handle(httpexchange xchg) throws ioexception { //operations involves (readonly) hashmap created } }

the question is: how allow handler read hashmap? there way pass object parameter handler?

yes, wrapper class:

public class httpserverwrapper{ private hashmap map = ...; public httpserverwrapper(int port) { httpserver server = httpserver.create(new inetsocketaddress(port), 0); server.createcontext("/hashmap", new handler()); server.start(); } public static void main(string args[]){ int port = 8000; new httpserverwrapper(port); } public class handler implements httphandler { public void handle(httpexchange xchg) throws ioexception { map.get(...); } } }

java hashmap httphandler com.sun.net.httpserver