NETWORKING - Introduction to Java Programming: Comprehensive Version - page 1150

11 public class MultiThreadServer extends Application {
12

// Text area for displaying contents

13 private TextArea ta = new TextArea();

14
15 // Number a client

16 private int clientNo = 0 ;

17
18 @Override // Override the start method in the Application class
19 public void start(Stage primaryStage) {
20 // Create a scene and place it in the stage
21 Scene scene = new Scene( new ScrollPane(ta), 450 , 200 );
22 primaryStage.setTitle( "MultiThreadServer" ); // Set the stage title
23 primaryStage.setScene(scene); // Place the scene in the stage
24 primaryStage.show(); // Display the stage
25
26 new Thread( () -> {
27 try {
28 // Create a server socket
29 ServerSocket serverSocket = new ServerSocket( 8000 );
30 ta.appendText( "MultiThreadServer started at "
31 + new Date() + '\n' );
32
33

server socket

while ( true ) {

34 // Listen for a new connection request

connect client

35 Socket socket = serverSocket.accept();

36
37 // Increment clientNo
38 clientNo++;
39
40 Platform.runLater( () -> {
41 // Display the client number
42 ta.appendText( "Starting thread for client " + clientNo +
43

update GUI

" at " + new Date() + '\n' );

44
45 // Find the client's host name, and IP address
46 InetAddress inetAddress = socket.getInetAddress();
47 ta.appendText( "Client " + clientNo + "'s host name is "
48 + inetAddress.getHostName() + "\n" );
49 ta.appendText( "Client " + clientNo + "'s IP Address is "
50 + inetAddress.getHostAddress() + "\n" );
51 });
52
53

network information

// Create and start a new thread for the connection

54 new Thread( new HandleAClient(socket)).start();

create task

55 }
56 }
57 catch (IOException ex) {
58 System.err.println(ex);
59 }
60 }).start();
61 }
62
63

start thread

// Define the thread class for handling new connection

64 class HandleAClient implements Runnable {

65 private Socket socket; // A connected socket

task class

66
67 /** Construct a thread */

68 public HandleAClient(Socket socket) {

69 this .socket = socket;

70 }
71