Código fonte com erro

import java.net.*;

public class Ping {

// the default port static int PORT = 80;
// representation of a ping target 

static class Target {

    InetSocketAddress address;
    SocketChannel channel;
    Exception failure;
    long connectStart;
    long connectFinish = 0;
    boolean shown = false;
    Target(String host) { 
        try { 
        address = new InetSocketAddress
        (InetAddress.getByName(host), port); 
}
    catch (IOException x) { failure = x; } 
}

// the result of a test command 

void show() {
    String result;
    if (connectFinish != 0) result = Long.toString(connectFinish - connectStart) + "ms";
    else if (failure != null) result = failure.toString();
    else result = "Timed out";

    System.out.println(address + " : " + result);
    shown = true; 
    }
}