一闪一闪的星星和月亮
分两个类(这里就不引入包了,太长,复制下来放到eclipse里面智能提示就能导包了)
1.主类MyStar.java,创建主窗口
public class MyStar { static Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); public static void main(String[] args) { JFrame star = new JFrame("MyStarKey"); MyPanel mp = new MyPanel(); Thread th = new Thread(mp); th.start(); star.setBackground(Color.black); star.setSize(screen); star.add(mp); star.show(); } }
2.设置效果和画星星月亮的panel;MyPanel.java
class MyPanel extends JPanel implements Runnable { static Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); public void paint(Graphics g) { // super.paint(g); // repaint(); g.setColor(Color.black); g.fillRect(0, 0, (int) screen.getWidth(), (int) screen.getHeight()); g.setColor(Color.white); g.fillOval(900, 100, 150, 150); g.setColor(Color.black); g.fillOval(860, 70, 150, 150); g.setColor(Color.white); for (int i = 0; i < 400; i++) { g.drawString("*", (int) (Math.random() * screen.getWidth()), (int) (Math.random() * screen.getHeight())); } g.setColor(Color.white); } @Override public void run() { try { for (int i = 0;; i++) { Thread.sleep(1000); repaint(); } } catch (InterruptedException e) { e.printStackTrace(); } } }
这两个类可以放到一个java文件中,不然MyPanel.java的class前要加一个public