Java ARP Scanner -

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i need write java program, gets computer network interfaces , scans ip addresses , mac addresses within subnet.

i'm not sure how that, found there's method called:

arping.scan(devicename, network, mask, timeout);

is i'm looking for? return? there aren't lot of comments, , i'm new this, can't figure out myself. please help!

public void checkhosts(string subnet){     int timeout=1000;     (int i=1;i<254;i++){         string host=subnet + "." + i;         if (inetaddress.getbyname(host).isreachable(timeout)){             system.out.println(host + " reachable");         }     }  }


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