Java Tutorial/J2ME/OutputConnection

Connect to a file

   <source lang="java">

import java.io.IOException; import java.io.OutputStream; import java.io.PrintStream; import javax.microedition.io.ConnectionNotFoundException; import javax.microedition.io.Connector; import javax.microedition.io.OutputConnection; import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class J2MEFileConnection extends MIDlet implements CommandListener {

 private Command exit = new Command("Exit", Command.EXIT, 1), 
               start = new Command("Start", Command.EXIT, 1);
 private Display display;
 private Form form = new Form("Write To File");
 public J2MEFileConnection() {
   display = Display.getDisplay(this);
   form.addCommand(exit);
   form.addCommand(start);
   form.setCommandListener(this);
 }
 public void startApp() throws MIDletStateChangeException {
   display.setCurrent(form);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command command, Displayable displayable) {
   if (command == exit) {
     destroyApp(false);
     notifyDestroyed();
   } else if (command == start) {
     try {
       OutputConnection connection = (OutputConnection) Connector.open("file://c:/myfile.txt;append=true", Connector.WRITE);
       OutputStream out = connection.openOutputStream();
       PrintStream output = new PrintStream(out);
       output.println("This is a test.");
       out.close();
       connection.close();
       Alert alert = new Alert("Completed", "Data Written", null, null);
       alert.setTimeout(Alert.FOREVER);
       alert.setType(AlertType.ERROR);
       display.setCurrent(alert);
     } catch (Exception error) {
       Alert alert = new Alert("Error", error.toString(), null, null);
       alert.setTimeout(Alert.FOREVER);
       alert.setType(AlertType.ERROR);
       display.setCurrent(alert);
     }
   }
 }

}</source>