Denis un codigo breve :v me avisas si no entiendes >--< import java.awt.Color; import java.awt.Graphics; import java.util.concurrent.Executors; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.TimeUnit; import javax.swing.JFrame; import javax.swing.JPanel; public class carlight extends JPanel { private Color lastColor = Color.YELLOW; ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor(); public void paintComponent(Graphics g) { super.paintComponents(g); if(lastColor.equals(Color.YELLOW)) { lastColor = Color.GREEN; } else { lastColor = Color.YELLOW; } g.setColor(lastColor); g.fillOval(25, 25, 10, 10); } public carlight() { JFrame frame = new JFrame(); frame.setTitle("Carlights"); frame.add(this); frame.setBackground(Color.black); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(100, 150); frame.setVisible(true); service.scheduleAtFixedRate(new Runnable() { public void run() { repaint(); } }, 0, 1, TimeUnit.SECONDS); } public static void main(String[] args) { new carlight(); } }
Posted on: Sat, 29 Jun 2013 22:57:28 +0000
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