|  RETOUR | Exemple Java | 
| Construction d'une applet de lecture automatique de l'heure 
 
 Le programme serveur import java.net.* ;
import java.io.* ;
public class ServeurExemple3 {
  public static void main(String [] args) {
    ServerSocket srv ;
    int port = 5555 ;
    try {
      srv = new ServerSocket(port) ;
      System.out.println("Serveur Ok") ;
      while ( true ) {
        System.out.println("En attente") ;
        Socket connexion = srv.accept() ;
        System.out.println("Connexion") ;
        InputStream is = connexion.getInputStream() ;
        DataInputStream dis =
                        new DataInputStream(is) ;
        String s = dis.readUTF() ;
        System.out.println(s) ;
        connexion.close() ; } }
    catch(IOException e) { }
    }
  }                    
 L'applet cliente import java.applet.Applet ;
import java.awt.* ;
import java.net.* ;
public class Exemple5 extends Applet {
  private Label lb ;
  private String host ;
  public void init() {
    URL url = getDocumentBase() ;
    host = url.getHost() ;
    setLayout(new GridLayout(2,1,10,10));
    add(lb = new Label("",Label.CENTER));
    ThreadExemple5 te5 = new ThreadExemple5(host,lb) ;
    te5.start() ;
    }
  }     Classe Thread de l'applet cliente import java.awt.* ;
import java.net.* ;
import java.io.* ;
public class ThreadExemple5 extends Thread {
  private Label lb ;
  private String host ;
  public ThreadExemple5(String s,Label l) {
    lb = l ;
    host = s ;
    }
  public void run() {
    boolean bRun = true ;
    while ( bRun) {
      Socket s ;
      int port = 5555 ;
      try {
        s = new Socket(host,port) ;
        InputStream is = s.getInputStream() ;
        DataInputStream ois = new DataInputStream(is) ;
        int hr = ois.readInt() ;
        int mn = ois.readInt() ;
        int sc = ois.readInt() ;
        int ml = ois.readInt() ;
        lb.setText("Heure sur "+host+
                   " : "+hr+":"+mn+
                   ":"+sc+":"+ml) ;
        ois.close() ; }
      catch (UnknownHostException uhe) {
        bRun = false ;
        lb.setText(uhe.toString()) ; } 
      catch (IOException ioe) {
        bRun = false ;
        lb.setText(ioe.toString()) ; } ;
      try {
        sleep(1000) ; }
      catch (Exception e) { } ; }
    } 
  }     
 
 Remarques, erreurs | |