Source Code : Attributes MIDlet

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Attributes MIDlet

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.StringItem;
import javax.microedition.midlet.MIDlet;

public class AttributesMIDlet extends MIDlet implements CommandListener {

  private Display display;

  protected boolean started;

  private Command exitCommand;

  protected void startApp() {
    if (!started) {
      display = Display.getDisplay(this);
      Canvas canvas = new DummyCanvas();

      Form form = new Form("Attributes");
      exitCommand = new Command("Exit", Command.EXIT, 0);
      form.addCommand(exitCommand);

      boolean isColor = display.isColor();
      form.append(new StringItem(isColor ? "Colors: " : "Grays: ", String.valueOf(display
          .numColors())));
      form.append(new StringItem("Width: ", String.valueOf(canvas.getWidth())));
      form.append(new StringItem("Height: ", String.valueOf(canvas.getHeight())));
      form.append(new StringItem("Pointer? ", String.valueOf(canvas.hasPointerEvents())));
      form.append(new StringItem("Motion? ", String.valueOf(canvas.hasPointerMotionEvents())));
      form.append(new StringItem("Repeat? ", String.valueOf(canvas.hasRepeatEvents())));
      form.append(new StringItem("Buffered? ", String.valueOf(canvas.isDoubleBuffered())));

      form.setCommandListener(this);
      display.setCurrent(form);

      started = true;
    }
  }

  protected void pauseApp() {
  }

  protected void destroyApp(boolean unconditional) {
  }

  public void commandAction(Command c, Displayable d) {
    if (c == exitCommand) {
      notifyDestroyed();
    }
  }
}

class DummyCanvas extends Canvas {
  protected void paint(Graphics g) {
  }
}
       
       

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