barmidlet.java

个很好的用来学习学习手机通信的例子

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

public class BarMIDlet extends MIDlet implements CommandListener {
    private Command exitCommand;
    Display display;

    int Data1[]={40,80,20,80,90};
    int Data2[]={80,70,85,60,50};
    int maxX;
    int maxY;

    public BarMIDlet() {

    }

    public void startApp() throws MIDletStateChangeException {
		Display display = Display.getDisplay(this);

        maxX=Math.max(Data1.length,Data2.length)-1;
        maxY=0;
        for(int i=0; i<Data1.length; i++) {
            maxY=Math.max(maxY,Data1[i]);
        }
        for(int i=0; i<Data2.length; i++) {
            maxY=Math.max(maxY,Data2[i]);
        }
        maxY+=10;

        Displayable d = new BarCanvas(Data1, Data2, maxX, maxY);
        exitCommand = new Command("离开", Command.EXIT, 1);

        d.addCommand(exitCommand);
        d.setCommandListener(this);

        display.setCurrent(d);
    }

  public void pauseApp() {}
  public void destroyApp(boolean unconditional) {}
  public void commandAction(Command c, Displayable s) {
          notifyDestroyed();
  }
}