import javax.swing.JFrame;
import java.awt.Graphics;
import javax.swing.JPanel;
import java.awt.Color;


public class fraktal extends JPanel{

    public fraktal(){
        super();
    }


    public boolean drawQuader(Graphics g, int x, int y, int width, int height, int n){

        if ( n == 4){g.setColor(Color.RED);}
        if ( n == 3){g.setColor(Color.BLUE);}
        if ( n == 2){g.setColor(Color.CYAN);}
        if ( n == 1){g.setColor(Color.ORANGE);}
        if ( n == 0){g.setColor(Color.PINK);}

        g.fillRect(x,y,width,height);

        if (n == 0){
            return true;
            }
        else {
            drawQuader(g,x-width/4,y-height/4,width/2,height/2,n-1);
            drawQuader(g,(x+width)-width/4,(y+height)-width/4,width/2,height/2,n-1);
            drawQuader(g,(x+width)-width/4,y-width/4, width/2, height/2, n-1);
            drawQuader(g,x-width/4,(y+width)-width/4, width/2, height/2, n-1);
            return true;
        }

    }

    public void paintComponent(Graphics g){
        super.paintComponent(g);
        drawQuader(g, 150, 150, 250, 250, 4);

    }
    public static void main(String[] args) {
        fraktal panel = new fraktal();
        JFrame application = new JFrame();


        application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        application.add(panel);
        application.setSize(600, 600);
        application.setVisible(true);
        application.setTitle("Fraktal");

    }
}