Source Code : Login Midlet

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Login Midlet

/*
Learning Wireless Java
Help for New J2ME Developers
By Qusay Mahmoud
ISBN: 0-596-00243-2

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

public class LoginMidlet extends MIDlet implements CommandListener {
   private Display display;
   private TextField userName;
   private TextField password;
   private Form form;
   private Command cancel;
   private Command login;

   public LoginMidlet() {
      userName = new TextField("LoginID:", "", 10, TextField.ANY);
      password = new TextField("Password:", "", 10, TextField.PASSWORD);
      form = new Form("Sign in");
      cancel = new Command("Cancel", Command.CANCEL, 2);
      login = new Command("Login", Command.OK, 2);
   }

   public void startApp() {
      display = Display.getDisplay(this);
      form.append(userName);
      form.append(password);
      form.addCommand(cancel);
      form.addCommand(login);
      form.setCommandListener(this);
      display.setCurrent(form);
   }

   public void pauseApp() {
   }

   public void destroyApp(boolean unconditional) {
      notifyDestroyed();
   }

   public void validateUser(String name, String password) {
     if (name.equals("qm") && password.equals("j2")) {
       menu();
     } else {
       tryAgain();
     }
   }     

   public void menu() {
     List services = new List("Choose one", Choice.EXCLUSIVE);
     services.append("Check Mail", null);
     services.append("Compose", null);
     services.append("Addresses", null);
     services.append("Options", null);
     services.append("Sign Out", null);
     display.setCurrent(services);
   }

   public void tryAgain() {
     Alert error = new Alert("Login Incorrect", "Please try again", null, AlertType.ERROR);
     error.setTimeout(Alert.FOREVER);
     userName.setString("");
     password.setString("");
     display.setCurrent(error, form);
   }

   public void commandAction(Command c, Displayable d) {
      String label = c.getLabel();
      if(label.equals("Cancel")) {
        destroyApp(true);
      } else if(label.equals("Login")) {
         validateUser(userName.getString(), password.getString());
      }
   }
}


           
       

Thank with us