import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class Hello extends MIDlet {
    private Display display;
    private MyCanvas canvas;

    public void startApp() {
        canvas = new MyCanvas();
        display = Display.getDisplay(this);
        display.setCurrent(canvas);
        System.out.println("Hello J2ME!");
    }

    public void pauseApp() {}
    public void destroyApp(boolean unconditional) {}
}

class MyCanvas extends Canvas {
    protected void paint(Graphics g) {
        // Clear screen (black background)
        g.setColor(0, 0, 0);
        g.fillRect(0, 0, getWidth(), getHeight());

        // Draw a red rectangle
        g.setColor(255, 0, 0);
        g.fillRect(20, 20, 80, 40);

        // Draw a green line
        g.setColor(0, 255, 0);
        g.drawLine(0, 0, getWidth(), getHeight());

        // Draw white text
        g.setColor(255, 255, 255);
        g.drawString("Hello J2ME!", 10, 80, Graphics.TOP | Graphics.LEFT);

        // Draw a blue circle (approximated with drawArc)
        g.setColor(0, 0, 255);
        g.drawArc(100, 100, 50, 50, 0, 360);
    }
}