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This article contains the code for the network client as previous article. The NetworkClient class is a generic starting point for network clients and is extended by HttpClient.


private boolean checkHost(String host) {

try {



} catch(UnknownHostException uhe) {

outputArea.setText("Bogus host: " + host);








public class NetworkClient {

protected String host;

protected int port;


public NetworkClient(String host, int port) { = host;

this.port = port;



public void connect() {

try {

Socket client = new Socket(host, port);


} catch(UnknownHostException uhe) {

System.out.println("Unknown host: " + host);


} catch(IOException ioe) {

System.out.println("IOException: " + ioe);





protected void handleConnection(Socket client)

throws IOException {

PrintWriter out =


BufferedReader in =


out.println("Generic Network Client");


("Generic Network Client:\n" +

"Made connection to " + host +

" and got ’" + in.readLine() + "’ in response");



public String getHost() {



public int getPort() {




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