How To load or display another java file class!!!

Question

Master I am newbie just starting to learn about java. I have probelm to make my project for exam. anybody can help me for solve this probe thanks i need that soon.
I have 3 file's java and the probe is after login i want to go to another file to display.
- frm_login
- SMSCENTER
-SMSCENTERservice
This the source code:
-frm_login.java
/* Indonesia
* Ady Leo
* Univeristas Budi Luhur
import javax.microedition.lcdui.Alert;
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.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import javax.microedition.lcdui.Ticker;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
* @adyleo
* Jakarta, Indonesian
* contact me : [email protected]
* open source , u can use this free, edit this free, dont forget to feedback to me
public class frm_login extends MIDlet implements CommandListener {
private Display display;
private Form formLogin;
private TextField username;
private TextField pass;
private Ticker loginnews;
private Command cmdKeluar;
private Command cmdPilih;
private Command cmdSch;
private TextBox formAdmin;
private Ticker ticker3;
private Command cmdKeluar2;
private SMSCENTER smscenter;
private Alert alert;
public frm_login() {
display = Display.getDisplay(this);
formLogin = new Form("LOGIN");
username = new TextField("username", "", 50, TextField.ANY);
pass = new TextField("password", "", 50, TextField.PASSWORD);
loginnews = new Ticker("LOGIN USER");
cmdKeluar = new Command("Keluar", Command.EXIT, 1);
cmdPilih = new Command("Login", Command.OK, 2);
cmdSch = new Command("Check", Command.OK, 3);
formLogin.setTicker(loginnews);
formLogin.append(username);
formLogin.append(pass);
formLogin.addCommand(cmdKeluar);
formLogin.addCommand(cmdPilih);
formLogin.setCommandListener(this);
formAdmin = new TextBox("Welcome Halim", "Checks Your Flight Schedule", 40, TextField.ANY);
ticker3 = new Ticker("WELCOME ABDUL HALIM ALHADY");
formAdmin.setTicker(ticker3);
formAdmin.addCommand(cmdKeluar);
formAdmin.addCommand(cmdSch);
formAdmin.setCommandListener(this);
alert = new Alert("Error...!!!");
alert.setTimeout(2500);
public void startApp() {
display.setCurrent(formLogin);
public void pauseApp() {
public void destroyApp(boolean unconditional) {
public void commandAction(Command c, Displayable d) {
if (c == cmdKeluar) {
destroyApp(false);
notifyDestroyed();
} else if( c == cmdPilih ) {
String PESAN_ERROR = "";
if (username.getString().trim().equals(""))
PESAN_ERROR += " Username Atau Password Anda Salah ";
if (pass.getString().trim().equals(""))
PESAN_ERROR += " Silakan Coba Lagi!!! ";
if (username.getString().trim().equals("messi") && pass.getString().trim().equals("lodewijk")) {
display.setCurrent(formAdmin);
} else {
alert.setString(PESAN_ERROR);
display.setCurrent(alert);
} else if ( c == cmdKeluar2 ){
destroyApp(false);
notifyDestroyed();
//this the probe i want after i click the cmdSch will action to display another file java.. please help me
} else if ( c == cmdSch ) {
     smscenter = new SMSCENTER();     
               display.setCurrent(smscenter);
-SMSCENTER.java
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class SMSCENTER extends MIDlet implements CommandListener {
Display display;
SMSCENTERservice form;
List list;
Command cmExit;
public SMSCENTER() {
display = Display.getDisplay(this);
public void startApp() {
list = new List("Sistem SMS Center", List.IMPLICIT);
list.append("cek detil ", null);
list.append("cek service ", null);
list.append("cek surat", null);
cmExit = new Command("Keluar", Command.EXIT, 1);
list.addCommand(cmExit);
list.setCommandListener(this);
display.setCurrent(list);
public void pauseApp() {
public void destroyApp(boolean unconditional) {//KOMPONEN 3
public void exitMIDlet() {
destroyApp(false);
notifyDestroyed();
public void commandAction(Command c, Displayable s) {//even dari tombol"nya
if (c == List.SELECT_COMMAND) {
switch (list.getSelectedIndex()) {
case 0://jika menu yang pertama yg dipilih maka jalankan
form = new SMSCENTERservice(this, display, 0);
display.setCurrent(form);
break;
case 1:
form = new SMSCENTERservice(this, display, 1);
display.setCurrent(form);
break;
case 2:
form = new SMSCENTERservice(this, display, 2);
display.setCurrent(form);
break;
} else if (c == cmExit) {
exitMIDlet();
-SMSCENTERservice.java
import java.io.IOException;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.io.*;
import java.util.*;
public class SMSCENTERservice extends Form implements CommandListener, Runnable {
private Display display;
private Command cmdBack, cmdKirim;
private SMSCENTER midlet;
private TextField tfdetil,tfservice,tfsurat;
private TextBox arti =new TextBox("","",1024,0);
private Command cmdInputK = new Command("Input", Command.OK,1);
private Command cmdKembaliK = new Command("Kembali", Command.BACK,2);
private Alert alert,alert2,alert3,alert4;
Object o;
koneksi konek = new koneksi();
String url = "";
private int Index;
private String messaage, address, pesan;
private int index;
private String port;
public SMSCENTERservice(SMSCENTER midlet, Display display, int index) {
super("Sistem SMS Gateway");
this.display = display;
this.midlet = midlet;
this.index = index;
switch (index) {
case 0:
append("cek detil");
tfdetil = new TextField("DETIL SERVICE", "", 160, TextField.ANY);
append(tfdetil);
break;
case 1:
     append("cek service ");
tfservice = new TextField("SERVICE", "", 160, TextField.ANY);
          append(tfservice);
break;
case 2:
append("cek surat");
tfsurat = new TextField("SURAT SERVICE", "", 160, TextField.ANY);
append(tfsurat);
break;
cmdBack = new Command("Kembali", Command.BACK, 1);
addCommand(cmdBack);
cmdKirim = new Command("Kirim", Command.OK, 1);
addCommand(cmdKirim);
setCommandListener(this);
public void commandAction(Command c, Displayable d) {
     o=c;
if (c == cmdBack) {
display.setCurrent(midlet.list);
} else if (c == cmdKirim) {
switch (index) {
case 0:
url = "http://localhost/service/proses.php?katakunci=detil_service&NomorDetil=" + tfdetil.getString();
break;
case 1:
url = "http://localhost/service/proses.php?katakunci=service&NomorService=" + tfservice.getString();
break;
case 2:
url = "http://localhost/service/proses.php?katakunci=surat_service&NomorSurat=" + tfsurat.getString();
break;
public void run() {
try {
     if(konek.downloadpage(url))
               arti.setString(konek.b.toString());
               arti.addCommand(cmdInputK);
               arti.addCommand(cmdKembaliK);
               arti.setCommandListener(this);
               display.setCurrent(arti);
else
          alert2 = new Alert("warning!", "Masukan kata lebih dahulu....",null, AlertType.INFO);
          display.setCurrent(alert2);
catch (IOException e)
Sorry if i am posting not on the good way or worng places, anyway i hope someone can help me just in form login i am sutck...
I am student just newbie for java programing.
thnks a lot

Answer 1

Please reformat that mess with {noformat}{noformat} tags. No-one can read it until you do.