Folge dem Video um zu sehen, wie unsere Website als Web-App auf dem Startbildschirm installiert werden kann.
Anmerkung: Diese Funktion ist in einigen Browsern möglicherweise nicht verfügbar.
import java.net.*;
import java.io.*;
import java.awt.*;
import java.applet.*;
public class chatapplet extends Applet implements Runnable
{
public static final int PORT = 8765;
Socket socket;
DataInputStream in;
PrintStream out;
TextField inputfield;
TextArea outputarea;
Thread thread;
public void init()
{
inputfield = new TextField();
outputarea = new TextArea();
outputarea.setFont( new Font("Dialog", Font.PLAIN, 12));
outputarea.setEditable(false);
this.setLayout(new BorderLayout());
this.add("South", inputfield);
this.add("Center", outputarea);
this.setBackground(Color.lightGray);
this.setForeground(Color.black);
inputfield.setBackground(Color.white);
outputarea.setBackground(Color.white);
}
public void start()
{
try
{
socket = new Socket(this.getCodeBase().getHost(), PORT);
in = new DataInputStream(socket.getInputStream());
out = new PrintStream(socket.getOutputStream());
} catch (IOException e)
{
this.showStatus(e.toString());
say("Verbindung zum Server fehlgeschlagen!");
System.exit(1);
}
say("Verbindung zum Server aufgenommen...");
if (thread == null)
{
thread = new Thread(this);
thread.setPriority(Thread.MIN_PRIORITY);
thread.start();
}
}
public void stop()
{
try
{
socket.close();
} catch (IOException e)
{
this.showStatus(e.toString());
}
if ((thread !=null) && thread.isAlive())
{
thread.stop();
thread = null;
}
}
public void run()
{
String line;
try
{
while(true)
{
line = in.readLine();
if(line!=null)
outputarea.appendText(line+'\n' );
}
} catch (IOException e) { say("Verbindung zum Server abgebrochen"); }
}
public boolean action(Event e, Object what)
{
if (e.target==inputfield)
{
String inp=(String) e.arg;
out.println(inp);
inputfield.setText("");
return true;
}
return false;
}
public void say(String msg)
{
outputarea.appendText("*** "+msg+" ***\n");
}
}