Ping no java

import java.io.*;

public class Ping
{
    private BufferedReader out;
    private Process p;

    public Ping(String addr) throws IOException
    {
        p = Runtime.getRuntime().exec("ping " + addr);
        out = new BufferedReader(new InputStreamReader(p.getInputStream()));
    }

    public BufferedReader getBufferedReader()
    {
        return out;
    }

    public void waitFor() throws InterruptedException
    {
        p.waitFor();
    }

    public static void main(String [] args)
                       throws IOException, InterruptedException
    {
        final Ping p = new Ping(args[0]);

        new Thread(new Runnable()
        {
            public void run()
            {
                try
                {
                    String s = null;
                    while((s = p.getBufferedReader().readLine()) != null)
                    {
                        System.out.println(s);
                    }
                }
                catch(IOException io){}
            }
        }).start();

        p.waitFor();
    }
}