swing 作图图表

swing 绘制图表
由于JFreeChart在swing中不能动态刷新， 所以采用手工的方式来做

package fiveGame;

import java.awt.BorderLayout;
import java.awt.Graphics;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Panel5 extends JPanel{
	public static void main(String[] args) {
		JFrame frame = new JFrame();
		Panel5 p = new Panel5();
		frame.setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
		frame.setContentPane(p);
		frame.setSize(443,552);
		frame.setLayout(new BorderLayout());

		frame.setVisible(true);
	}
	
	@Override
	synchronized protected void paintComponent(Graphics g) {
		
		int x = 20;
		int y = 450;
		int xDistance = 360;
		int yDistance = 380;
		int letterDistance = 12;
		
		g.drawLine(x, y, x+xDistance, y);
		g.drawLine(x, y, x, y-yDistance);
		
		g.drawString(String.valueOf(yDistance), x, y-yDistance);
		g.drawString(String.valueOf(0), x, y + letterDistance);
		
		int j = yDistance;
		for(int i=33, k=1; i<xDistance; i=i+xDistance/10, k++){
			
			j=j - yDistance/10;
			
			g.drawLine(x+i, y, x+i, y-j);
			g.drawString(String.valueOf(j), x+i,y-j);
			g.drawString(String.valueOf(k), x+i,y+letterDistance);
		}
		
	}
}