Java by API/javax.microedition.lcdui/ChoiceGroup

ChoiceGroup.MULTIPLE

 
import java.io.IOException;
import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.midlet.MIDlet;
public class ChoiceGroupMIDlet extends MIDlet {
  protected Display display;
  protected void startApp() {
    display = Display.getDisplay(this);
    Form form = new Form("Demo");
    form.append("line");
        try {
          Image red = Image.createImage("/red.png");
          Image green = Image.createImage("/green.png");
          Image blue = Image.createImage("/blue.png");
    
          String[] strings = new String[] { "Red", "Green", "Blue" };
          Image[] images = new Image[] { red, green, blue };
          ChoiceGroup exGroup = new ChoiceGroup("Choose one", ChoiceGroup.EXCLUSIVE,
                                                      strings, images);
          form.append(exGroup);
          ChoiceGroup multiGroup = new ChoiceGroup("Choose any", ChoiceGroup.MULTIPLE);
          form.append(multiGroup);
          multiGroup.append("Use SSL", null);
          multiGroup.append("Reconnect on failure", null);
          multiGroup.append("Enable tracing", null);
       } catch (IOException ex) {
          form.append("Failed to load images");
       }

    display.setCurrent(form);
  }
  protected void pauseApp() {
  }
  protected void destroyApp(boolean unconditional) {
  }
}

ChoiceGroup(String label, int choiceType)

 
import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.ChoiceGroup;
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 J2MECheckBoxes extends MIDlet implements CommandListener {
  private Display display;
  private Form form = new Form("Movies");
  private Command exit = new Command("Exit", Command.EXIT, 1);
  private Command process = new Command("Process", Command.SCREEN, 2);
  private ChoiceGroup movies = new ChoiceGroup("Select Movies You Like to See", Choice.MULTIPLE);
  private int movieIndex;
  public J2MECheckBoxes() {
    display = Display.getDisplay(this);
    movies.append("A", null);
    movies.append("R", null);
    movies.append("C", null);
    movies.append("H", null);
    movieIndex = form.append(movies);
    form.addCommand(exit);
    form.addCommand(process);
    form.setCommandListener(this);
  }
  public void startApp() {
    display.setCurrent(form);
  }
  public void pauseApp() {
  }
  public void destroyApp(boolean unconditional) {
  }
  public void commandAction(Command command, Displayable displayable) {
    if (command == process) {
      boolean picks[] = new boolean[movies.size()];
      StringItem message[] = new StringItem[movies.size()];
      movies.getSelectedFlags(picks);
      for (int x = 0; x < picks.length; x++) {
        if (picks[x]) {
          message[x] = new StringItem("", movies.getString(x) + "\n");
          form.append(message[x]);
        }
      }
      form.delete(movieIndex);
      form.removeCommand(process);
    } else if (command == exit) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
}