mport java.io.*;
import javax.microedition.midlet.*;
import javax.microedition.io.*;
import javax.microedition.lcdui.*;

public class Datos extends MIDlet implements CommandListener {
Display display = null;
List menu = null;
TextBox input = null;
TextBox t = null;
private String url1 = "http://tareasluis.comze.com/misDatos";
private String url2 = "http://tareasluis.comze.com/datosAdicionales";

static final Command backCommand = new Command("Back", Command.BACK, 0);
static final Command mainMenuCommand = new Command("Main", Command.SCREEN, 1);
static final Command exitCommand = new Command("Exit", Command.STOP, 2);
String currentMenu = null;

public Datos() {
}

public void startApp() throws MIDletStateChangeException {
display = Display.getDisplay(this);

menu = new List("Menu Items", Choice.IMPLICIT);
menu.append("misDatos", null);
menu.append("datosAdicionales", null);
menu.addCommand(exitCommand);
menu.setCommandListener(this);

mainMenu();
}

void mainMenu() {
display.setCurrent(menu);
currentMenu = "Main";
}

public void misDatos() {
try {
download(url1);
} catch(IOException e) {
System.out.println("IOException: " + e);
}

}

public void datosAdicionales(){
try {
download1(url2);
} catch(IOException e) {
System.out.println("IOException: " + e);
}

}
private void download (String url1) throws IOException {
StringBuffer b = new StringBuffer();
InputStream is = null;
HttpConnection c = null;

try {
long len = 0;
int ch = 0;

c = (HttpConnection)Connector.open(url1);
is = c.openInputStream();

while((ch = is.read()) != -1) {
b.append((char)ch);
}
t = new TextBox("misDatos...", b.toString(), 1024, 0);
t.addCommand(backCommand);
t.setCommandListener(this);

} finally {
if (is != null)
is.close();
if (c != null)
c.close();
}
display.setCurrent(t);
}

private void download1 (String url2) throws IOException {
StringBuffer b = new StringBuffer();
InputStream is = null;
HttpConnection c = null;

try {
long len = 0;
int ch = 0;

c = (HttpConnection)Connector.open(url2);
is = c.openInputStream();

while((ch = is.read()) != -1) {
b.append((char)ch);
}
t = new TextBox("datosAdicionales...", b.toString(), 1024, 0);
t.addCommand(backCommand);
t.setCommandListener(this);
} finally {
if (is != null)
is.close();
if (c != null)
c.close();
}
display.setCurrent(t);
}
public void testItem1() {
misDatos();
currentMenu = "misDatoss";
}

public void testItem2() {
datosAdicionales();
currentMenu = "datosAdicionales";
}

public void commandAction(Command c, Displayable d) {
String label = c.getLabel();
if (label.equals("Exit")) {
destroyApp(true);
} else if (label.equals("Back")) {
mainMenu();
if (currentMenu.equals("misDatos") || currentMenu.equals("datosAdicionales")) {

}
} else {
List down = (List)display.getCurrent();
switch (down.getSelectedIndex()) {
case 0: testItem1();break;
case 1: testItem2();break;
}
}
}

public void pauseApp() {
}

public void destroyApp(boolean incondicional) {
}
}

mi presentacion en mi cel

el codigo de mi tarjeta

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class tarjeta extends MIDlet implements CommandListener {
private Display display;
private Command salir;
private Canvas micanvas;

//Constructor
public tarjeta() {

//Cogemos el display
display=Display.getDisplay(this);

//Creamos la pantalla principal
micanvas = new Canvas() {
private int width;
private int height;

public void paint (Graphics g){
width=getWidth();
height=getHeight();

//Pintamos la pantalla de negro
g.setColor(0,0,0);
g.fillRect(0,0,width,height);

//Leemos una imagen desde un fichero y la mostramos
try {
Image imagen=Image.createImage("/logo.png");
g.drawImage(imagen,width/2,height/2,(Graphics.VCENTER | Graphics.HCENTER));
g.setColor(255,255,255);
//g.setStrokeStyle(Graphics.SOLID);
g.drawString("luis antonio , lobo_domesticado13@hotmail.com",10,10,(Graphics.BASELINE |
Graphics.LEFT));


g.drawString("",10,10,(Graphics.BASELINE |
Graphics.LEFT));
} catch (java.io.IOException e) {
g.setColor(255,255,255);
g.setStrokeStyle(Graphics.SOLID);
g.drawString("Fallo al leer logo.png",0,height/2,(Graphics.BASELINE | Graphics.LEFT));

}
}//fin del metodo paint
};
//Creamos el comando salir
salir=new Command("Salir",Command.EXIT,3);

//añadimos el comando al Canvas y activamos el oyente
micanvas.addCommand(salir);
micanvas.setCommandListener(this);
}

//Metodo que se llama cuando pasamos de Pausado a Activo
protected void startApp( ) {
display.setCurrent(micanvas);
}

//Metodo que se llama cuando pasamos de Activado a Pausado
protected void pauseApp( ) {
display.setCurrent(micanvas);
}

//Metodo que se llama cuando se destruye el midlet
protected void destroyApp(boolean incondicional) {
}

//Metodo para el tratamiento de datos del teclado
public void commandAction(Command c, Displayable d) {
//Miramos si nos salimos o mostramos alerta
if (c==salir) {
destroyApp(true);
notifyDestroyed();

mi presenyaciojnn e