Why I am nt getting this alert box inspite of instantiating it?
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- /*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
- package hello;
- import javax.microedition.midlet.*;
- import javax.microedition.lcdui.*;
- /**
- * @author vimal
- */
- public class HelloMIDlet extends MIDlet implements CommandListener {
- private boolean midletPaused = false;
- //<editor-fold defaultstate="collapsed" desc=" Generated Fields ">
- private Command exitCommand;
- private Form form;
- private StringItem stringItem;
- //</editor-fold>
- /**
- * The HelloMIDlet constructor.
- */
- public HelloMIDlet() {
- }
- //<editor-fold defaultstate="collapsed" desc=" Generated Methods ">
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Method: initialize ">
- /**
- * Initilizes the application.
- * It is called only once when the MIDlet is started. The method is called before the <code>startMIDlet</code> method.
- */
- private void initialize() {
- // write pre-initialize user code here
- // write post-initialize user code here
- }
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Method: startMIDlet ">
- /**
- * Performs an action assigned to the Mobile Device - MIDlet Started point.
- */
- public void startMIDlet() {
- // write pre-action user code here
- switchDisplayable(null, getForm());
- // write post-action user code here
- }
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Method: resumeMIDlet ">
- /**
- * Performs an action assigned to the Mobile Device - MIDlet Resumed point.
- */
- public void resumeMIDlet() {
- // write pre-action user code here
- // write post-action user code here
- }
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Method: switchDisplayable ">
- /**
- * Switches a current displayable in a display. The <code>display</code> instance is taken from <code>getDisplay</code> method. This method is used by all actions in the design for switching displayable.
- * @param alert the Alert which is temporarily set to the display; if <code>null</code>, then <code>nextDisplayable</code> is set immediately
- * @param nextDisplayable the Displayable to be set
- */
- public void switchDisplayable(Alert alert, Displayable nextDisplayable) {
- // write pre-switch user code here
- Display display = getDisplay();
- if (alert == null) {
- display.setCurrent(nextDisplayable);
- } else {
- display.setCurrent(alert, nextDisplayable);
- }
- // write post-switch user code here
- }
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Method: commandAction for Displayables ">
- /**
- * Called by a system to indicated that a command has been invoked on a particular displayable.
- * @param command the Command that was invoked
- * @param displayable the Displayable where the command was invoked
- */
- public void commandAction(Command command, Displayable displayable) {
- // write pre-action user code here
- if (displayable == form) {
- if (command == exitCommand) {
- // write pre-action user code here
- exitMIDlet();
- // write post-action user code here
- }
- }
- // write post-action user code here
- }
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Getter: exitCommand ">
- /**
- * Returns an initiliazed instance of exitCommand component.
- * @return the initialized component instance
- */
- public Command getExitCommand() {
- if (exitCommand == null) {
- // write pre-init user code here
- exitCommand = new Command("Exit", Command.EXIT, 0);
- // write post-init user code here
- }
- return exitCommand;
- }
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Getter: form ">
- /**
- * Returns an initiliazed instance of form component.
- * @return the initialized component instance
- */
- public Form getForm() {
- if (form == null) {
- // write pre-init user code here
- form = new Form("Welcome", new Item[] { getStringItem() });
- form.addCommand(getExitCommand());
- form.setCommandListener(this);
- // write post-init user code here
- }
- return form;
- }
- //</editor-fold>
- //<editor-fold defaultstate="collapsed" desc=" Generated Getter: stringItem ">
- /**
- * Returns an initiliazed instance of stringItem component.
- * @return the initialized component instance
- */
- public StringItem getStringItem() {
- if (stringItem == null) {
- // write pre-init user code here
- stringItem = new StringItem("Hello", "Hello, World!");
- // write post-init user code here
- }
- return stringItem;
- }
- //</editor-fold>
- /**
- * Returns a display instance.
- * @return the display instance.
- */
- public Display getDisplay () {
- System.out.println("Testing display ......");
- System.out.println(""); System.out.println("");
- System.out.println(".................Testing choice ......");
- System.out.println(Choice.EXCLUSIVE);
- System.out.println(Choice. IMPLICIT );
- System.out.println(Alert.FOREVER );
- Alert al=new Alert("Testing alert");
- System.out.println("");
- System.out.println(al.getTimeout());
- System.out.println(al.getString());
- al.setString("This is a test alert");
- return Display.getDisplay(this);
- }
- /**
- * Exits MIDlet.
- */
- public void exitMIDlet() {
- switchDisplayable (null, null);
- destroyApp(true);
- notifyDestroyed();
- }
- /**
- * Called when MIDlet is started.
- * Checks whether the MIDlet have been already started and initialize/starts or resumes the MIDlet.
- */
- public void startApp() {
- if (midletPaused) {
- resumeMIDlet ();
- } else {
- initialize ();
- startMIDlet ();
- }
- midletPaused = false;
- }
- /**
- * Called when MIDlet is paused.
- */
- public void pauseApp() {
- midletPaused = true;
- }
- /**
- * Called to signal the MIDlet to terminate.
- * @param unconditional if true, then the MIDlet has to be unconditionally terminated and all resources has to be released.
- */
- public void destroyApp(boolean unconditional) {
- }
- }
Thanks in adv
With regards