Java by API/javax.microedition.lcdui/Alert

Alert.FOREVER

   <source lang="java">

import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.List; import javax.microedition.midlet.MIDlet; public class J2MEListImplicit extends MIDlet implements CommandListener {

 private Display display;
 private List list;
 private Command exit;
 Alert alert;
 public J2MEListImplicit() {
   display = Display.getDisplay(this);
   exit = new Command("Exit", Command.EXIT, 1);
   list = new List("Menu:", List.IMPLICIT);
   list.append("New", null);
   list.append("Open", null);
   list.addCommand(exit);
   list.setCommandListener(this);
 }
 public void startApp() {
   display.setCurrent(list);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command command, Displayable displayable) {
   if (command == List.SELECT_COMMAND) {
     String selection = list.getString(list.getSelectedIndex());
     alert = new Alert("Option Selected", selection, null, null);
     alert.setTimeout(Alert.FOREVER);
     alert.setType(AlertType.INFO);
     display.setCurrent(alert);
   } else if (command == exit) {
     destroyApp(false);
     notifyDestroyed();
   }
 }

}

 </source>
   
  
 
  

Alert: setTimeout(int value)

   <source lang="java">

import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.List; import javax.microedition.midlet.MIDlet; public class J2MEListImplicit extends MIDlet implements CommandListener {

 private Display display;
 private List list;
 private Command exit;
 Alert alert;
 public J2MEListImplicit() {
   display = Display.getDisplay(this);
   exit = new Command("Exit", Command.EXIT, 1);
   list = new List("Menu:", List.IMPLICIT);
   list.append("New", null);
   list.append("Open", null);
   list.addCommand(exit);
   list.setCommandListener(this);
 }
 public void startApp() {
   display.setCurrent(list);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command command, Displayable displayable) {
   if (command == List.SELECT_COMMAND) {
     String selection = list.getString(list.getSelectedIndex());
     alert = new Alert("Option Selected", selection, null, null);
     alert.setTimeout(Alert.FOREVER);
     alert.setType(AlertType.INFO);
     display.setCurrent(alert);
   } else if (command == exit) {
     destroyApp(false);
     notifyDestroyed();
   }
 }

}

 </source>
   
  
 
  

Alert: setType(AlertType type)

   <source lang="java">

import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.List; import javax.microedition.midlet.MIDlet; public class J2MEListImplicit extends MIDlet implements CommandListener {

 private Display display;
 private List list;
 private Command exit;
 Alert alert;
 public J2MEListImplicit() {
   display = Display.getDisplay(this);
   exit = new Command("Exit", Command.EXIT, 1);
   list = new List("Menu:", List.IMPLICIT);
   list.append("New", null);
   list.append("Open", null);
   list.addCommand(exit);
   list.setCommandListener(this);
 }
 public void startApp() {
   display.setCurrent(list);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command command, Displayable displayable) {
   if (command == List.SELECT_COMMAND) {
     String selection = list.getString(list.getSelectedIndex());
     alert = new Alert("Option Selected", selection, null, null);
     alert.setTimeout(Alert.FOREVER);
     alert.setType(AlertType.INFO);
     display.setCurrent(alert);
   } else if (command == exit) {
     destroyApp(false);
     notifyDestroyed();
   }
 }

}

 </source>
   
  
 
  

new Alert(String title, String alertText, Image alertImage, AlertType alertType)

   <source lang="java">
   

import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.midlet.MIDlet; public class Main extends MIDlet implements CommandListener {

 private Command exitCommand = new Command("Exit", Command.EXIT, 1);
 private Command setLabelCommand = new Command("Label", Command.SCREEN, 1);
 private Command setTextCommand = new Command("Text", Command.SCREEN, 1);
 private Command getLabelTextCommand = new Command("Get", Command.SCREEN, 1);
 private StringItem stringItem1 = new StringItem("Label1", "Content1");
 private StringItem stringItem2 = new StringItem(null, "Content2");
 private Display display = Display.getDisplay(this);
 public Main() {
 }
 public void startApp() {
   Form aForm = new Form("StringItem");
   aForm.append(stringItem1);
   aForm.append(stringItem2);
   aForm.addCommand(exitCommand);
   aForm.addCommand(setLabelCommand);
   aForm.addCommand(setTextCommand);
   aForm.addCommand(getLabelTextCommand);
   aForm.setCommandListener(this);
   display.setCurrent(aForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == exitCommand) {
     destroyApp(false);
     notifyDestroyed();
   }
   if (c == setLabelCommand)
     stringItem1.setLabel("new label");
   if (c == setTextCommand)
     stringItem2.setText("new text");
   if (c == getLabelTextCommand) {
     Alert alert = new Alert("Info", stringItem1.getLabel() + ":" + stringItem1.getText(), null,
         AlertType.INFO);
     alert.setTimeout(5000);
     display.setCurrent(alert);
   }
 }

}

 </source>