java java查询当前广播域在线主机及主机名

import java.net.*;
import java.util.*;
class PingNet
{ public static void main(String[] args)
{

try{

int count=0;
for(int i=1;i< ibr> String host="192.168.0."+i;
InetAddress target=InetAddress.getByName(host);
if(target.isReachable(3000)){
count++;
System.out.println("发现"+ count+ "主机在线,"+"IP是"+target.getHostAddress()+"，主机名是"+target.getHostName());}
}}catch (Exception ex){
ex.printStackTrace();}
}
}