import Javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class SimpleItemMIDlet extends MIDlet
implements CommandListener {
public void startApp() {
Form form = new Form("SimpleItemMIDlet");
form.append(new SimpleItem("SimpleItem"));
Command c = new Command("Exit", Command.EXIT, 0);
form.addCommand(c);
form.setCommandListener(this);
Display.getDisplay(this).setCurrent(form);
}
public void pauseApp() {}
public void destroyApp(boolean unconditional) {}
public void commandAction(Command c, Displayable s) {
if (c.getCommandType() == Command.EXIT)
notifyDestroyed();
}
}
class SimpleItem extends CustomItem {
public SimpleItem(String title) { super(title); }
// CustomItem abstract methods.
public int getMinContentWidth() { return 100; }
public int getMinContentHeight() { return 60; }
public int getPrefContentWidth(int width) {
return getMinContentWidth();
}
public int getPrefContentHeight(int height) {
return getMinContentHeight();
}
public void paint(Graphics g, int w, int h) {
g.drawRect(0, 0, w - 1, h - 1);
g.setColor(0x000000ff);
int offset = 0;
for (int y = 4; y < h; y += 12) {
offset = (offset + 12) % 24;
for (int x = 4; x < w; x += 24) {
g.fillTriangle(x + offset, y,
x + offset - 3, y + 6,
x + offset + 3, y + 6);
}
}
}
}
（出处：http://www.knowsky.com）