Source Code : Two Alerts

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Two Alerts

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;

public class TwoAlerts extends MIDlet implements CommandListener {
  private Display mDisplay;

  private TextBox mTextBox;

  private Alert mTimedAlert;

  private Alert mModalAlert;

  private Command aboutCommand, goCommand, exitCommand;

  public TwoAlerts() {
    aboutCommand = new Command("About", Command.SCREEN, 1);
    goCommand = new Command("Go", Command.SCREEN, 1);
    exitCommand = new Command("Exit", Command.EXIT, 2);

    mTextBox = new TextBox("TwoAlerts", "", 32, TextField.ANY);
    mTextBox.addCommand(aboutCommand);
    mTextBox.addCommand(goCommand);
    mTextBox.addCommand(exitCommand);
    mTextBox.setCommandListener(this);

    mTimedAlert = new Alert("Network error", "A network error occurred. Please try again.", null,
        AlertType.INFO);
    mModalAlert = new Alert("About TwoAlerts",
        "TwoAlerts is a simple MIDlet that demonstrates the use of Alerts.", null, AlertType.INFO);
    mModalAlert.setTimeout(Alert.FOREVER);
  }

  public void startApp() {
    mDisplay = Display.getDisplay(this);

    mDisplay.setCurrent(mTextBox);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

  public void commandAction(Command c, Displayable s) {
    if (c == aboutCommand)
      mDisplay.setCurrent(mModalAlert);
    else if (c == goCommand)
      mDisplay.setCurrent(mTimedAlert, mTextBox);
    else if (c == exitCommand)
      notifyDestroyed();
  }
}


           
       

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