roadtest.java

一些员创的简单源码

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import java.util.*;
import java.math.*;
import javax.swing.Timer;
public class RoadTest
{
   public static void main(String[] args)
   {
      RoadFrame frame=new RoadFrame();
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.show();
   }

}

class RoadFrame extends JFrame
{
   public RoadFrame()
   {
      setTitle("ButtonFrame");
      setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
      Container content=getContentPane();
      RoadPanel panel=new RoadPanel();
      content.add(panel);
   }
   public static final int DEFAULT_WIDTH=400;
   public static final int DEFAULT_HEIGHT=400;
}


class RoadPanel extends JPanel
{
    public void paintComponent(Graphics g)
    {
	    super.paintComponent(g);
	    g.drawString("12",198,95);
	    g.drawString("9",90,198);
	    g.drawString("6",198,313);
	    g.drawString("3",305,198);
	    Graphics2D g2=(Graphics2D)g;
        setBackground(Color.white);                              //设置背景色
		int topX=100;
		int topY=100;
		int r=200;
        double k=Math.PI/6;
        g2.draw(new Ellipse2D.Double(topX,topY,r,r));
	    for(int i=0;i<12;i++)
		{
			Ellipse2D circle=new Ellipse2D.Double(topX,topY,r,r);
			double centerx=circle.getCenterX();
			double centery=circle.getCenterY();
			g2.draw(new Line2D.Double(centerx,centery,centerx+r*(Math.cos(k)/2),centery+(Math.sin(k))*r/2));
			k=k+Math.PI/6;
		}
		Ellipse2D circle=new Ellipse2D.Double(topX+10,topY+10,r-20,r-20);
		g2.draw(circle);
		g2.setPaint(Color.white);
		g2.fill(circle);
		g2.draw(new Line2D.Double(20,20,20,10));
	    ActionListener listener=new ActionPerformed();
	    Timer t=new Timer(1,listener);
	    t.start();

	}

    private class ActionPerformed implements ActionListener
	{
        public void actionPerformed(ActionEvent event)
        {
			Graphics g=getGraphics();
			Date now=new Date();
			String anow=" "+now;
			g.drawString(anow,100,350);
			update(g);
 		}
	}

}