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import java.net.InetAddress;
import java.net.UnknownHostException;
import java.io.IOException;

class Ping {
    public static void main(String[] args) {
        InetAddress in;
                    
        try {
            in = InetAddress.getByName(args[0]);
            boolean result = in.isReachable(5000);
            if (result) {
                System.out.println("Response OK");
            }
            else {
                System.out.println("Response fail");
            }
        } catch (UnknownHostException e) {
            System.out.println(e.getMessage());
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }
}