extends Canvas to create your own drawable area : Canvas « J2ME « Java Tutorial

1. Java Tutorial
2. J2ME
3. Canvas

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Graphics;
import javax.microedition.midlet.MIDlet;

public class CanvasMyMidlet extends MIDlet {
  public CanvasMyMidlet() { // constructor
  }

  public void startApp() {
    Canvas canvas = new MyCanvas();
    Display display = Display.getDisplay(this);
    display.setCurrent(canvas);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }
}

class MyCanvas extends Canvas {
  public void paint(Graphics g) {
    g.setColor(255, 0, 0);
    g.fillRect(0, 0, getWidth(), getHeight());
    g.setColor(255, 255, 255);
    g.drawString("Hello World!", 0, 0, g.TOP | g.LEFT);
  }
}

31.24.Canvas
	31.24.1.	extends Canvas to create your own drawable area
	31.24.2.	Get Canvas properties
	31.24.3.	Canvas key pressed and key typed events
	31.24.4.	Use Canvas to draw a clock
	31.24.5.	Canvas size
	31.24.6.	Navigatable Canvas
	31.24.7.	Canvas key event and navigate through arrow keys