*Midletimport javax.microedition.lcdui.Display;import javax.microedition.midlet.*;public class Midlet extends MIDlet private Display display;private pauseCanvas canvas; /声明画布对象 canvaspublic Midlet()display = Display.getDisplay(this); /获取 Displaycanvas=new pauseCanvas(); /创建画布对象 canvasdisplay .setCurrent(canvas); /设置 canvas 为当前显示对象public void startApp() public void pauseApp() public void destroyApp(boolean unconditional) *pauseCanvasimport javax.microedition.lcdui.Canvas;import javax.microedition.lcdui.Graphics;public class pauseCanvas extends Canvas protected void paint(Graphics g) protected void hideNotify() System.out.println(画面暂停);protected void showNotify() System.out.println(画面继续);