Path2d

GraphicTest

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Path2D;

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

@SuppressWarnings("serial")
public class GraphicTest extends JPanel{

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        
        Graphics2D g2 = (Graphics2D) g;
        
        g2.setColor(Color.RED);
        g2.fillRect(0, 0, getWidth(), getHeight());

        g2.setColor(Color.BLUE);
        Path2D path = new Path2D.Double(new Rectangle(getWidth() / 2 - 100, getHeight() / 2 - 100, 200, 200));
        path.setWindingRule(Path2D.WIND_EVEN_ODD);
        path.append(new Ellipse2D.Double(getWidth() / 2 - 50, getHeight() / 2 - 50, 100, 100), false);
        g2.fill(path);
        
    }
    
    
    @Override
    public Dimension getPreferredSize() {
        return new Dimension(500, 500);
    }



    public static void main(String[] args){
        JFrame frame = new JFrame();
        frame.setContentPane(new GraphicTest());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}