How to measure latency in a wifi network java android -

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i developing mobile app, need parameters implement algorithm, , not know how measure latency in wifi network. people says using ping, not know how implement this.

this first question, learning. thank you.

please have @ this answer might after

you might want try following code sample measure time 

string host = "172.16.0.2"; int timeout = 3000; long beforetime = system.currenttimemillis(); reachable =  inetaddress.getbyname(host).isreachable(timeout); long aftertime = system.currenttimemillis(); long timedifference = aftertime - beforetime;

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