Mega Code Archive
Connect to a file
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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.Command;
import javax.microedition.lcdui.CommandListener;
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);
}
}
}
}
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