import java.io.*;

import java.lang.*;

public class Ping{

public Ping() {

}

public static void main(String args[])

{

String[] addrs= {"www.sina.com"};

if (addrs.length < 1)

{

System.out.println("syntax Error!");

}

else

{

for(int i=0;i<addrs.length;i++){

String line = null;

try

{

Process pro = Runtime.getRuntime().exec("ping " + addrs[i]);

BufferedReader buf = new BufferedReader(new InputStreamReader(pro.getInputStream()));

while((line = buf.readLine()) != null)

System.out.println(line);

}

catch(Exception ex)

{

System.out.println(ex.getMessage());

}

}

}

}

}