import javax.microedition.lcdui.*;
import java.util.Random;

class RandomCanvas extends Canvas {
    private Random rand;
    private String rndstr;

    RandomCanvas() {
        rand = new Random();
        randomStr();
    }

    protected void randomStr() {
        rndstr = Integer.toString(rand.nextInt());
    }

    public void paint(Graphics g) {
        g.setColor(0);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.setColor(0x00ffffff);
        g.drawString(rndstr, 0, 0, g.LEFT|g.TOP);
    }

    protected void keyPressed(int keyCode) {
        int act = getGameAction(keyCode);
        if (act == FIRE || keyCode == KEY_NUM5) {
            randomStr();
            repaint();
        }
    }
}