线程的休眠

线程的休眠

public class SleepMethodTest extends JFrame{ private Thread t; private static Color[] color={Color.BLACK,Color.BLUE,Color.CYAN, Color.GREEN,Color.ORANGE,Color.YELLOW,Color.RED, Color.PINK,Color.LIGHT_GRAY }; private static final Random rand=new Random(); private static Color getC() { return color[rand.nextInt(color.length)]; } public SleepMethodTest() { t=new Thread(new Runnable() { int x=30; int y=50; public void run() { while (true) { try { Thread.sleep(1000); } catch (Exception e) { e.printStackTrace(); } Graphics graphics=getGraphics(); graphics.setColor(getC()); graphics.drawLine(x, y, 100, y++); if (y>=80) { y=50; } } } }); t.start();

public static void main(String[] args) { init(new SleepMethodTest(), 100, 100); } public static void init(JFrame jFrame,int width,int height) { jFrame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE); jFrame.setSize(width, height); jFrame.setVisible(true); }

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