fan.java

java菜单设计小例子

import javax.swing.*;
import java.awt.*;
public class Fan extends JPanel 
{
	private int position;
	public Fan()
	{
		JPanel p = new JPanel();	
		position = 0;
	}
	public Fan(int position)
	{
		JPanel p = new JPanel();
		setP(position);
	}
	public void setP(int position)
	{
		this.position = position;
	}
	public void paintComponent(Graphics g)
	{
	    super.paintComponent(g);
		g.setColor(Color.black);
		g.drawOval(10,10,202,202);
		g.setColor(Color.red);
		g.fillArc(10,10,202,202,position,30);
		g.fillArc(10,10,202,202,position + 90,30);
		g.fillArc(10,10,202,202,position + 180,30);
		g.fillArc(10,10,202,202,position + 270,30);
	}
	public int getP()
	{
		return position;
	}
}