LOl

package com.Kolokwium;

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.awt.AlphaComposite;

class Plansza extends JPanel
{
    final static BasicStroke wideStroke = new BasicStroke(8.0f);
    Shape figura;

    Plansza(Shape figura)
    {
        this.figura=figura;
    }

    public void paintComponent(Graphics g)
    {
        super.paintComponent(g);
        Graphics2D g2d=(Graphics2D)g;


        BasicStroke bs5 = new BasicStroke(8, BasicStroke.CAP_ROUND,
                BasicStroke.JOIN_BEVEL);
        g2d.setStroke(bs5);
        g2d.draw(figura);
        int xpoints[] = {300, 350, 450, 300};
        int ypoints[] = {300, 350, 300, 300};
        int npoints = 3;
        g2d.drawPolygon(xpoints,ypoints,npoints);


        BasicStroke bs6 = new BasicStroke(8, BasicStroke.CAP_ROUND,
                BasicStroke.JOIN_ROUND);
        g2d.setStroke(bs6);
        int xpoints2[] = {280, 330, 420, 280};
        int ypoints2[] = {280, 330, 280, 280};
        g2d.drawPolygon(xpoints2,ypoints2, 3);
        g2d.setPaint(Color.gray);
        g2d.setPaint(Color.red);
        g2d.fill(new Rectangle2D.Double(200, 20, 50, 50));
        g2d.setPaint(Color.black);

        GradientPaint redtowhite = new GradientPaint(150, 10, Color.black, 50, 10, Color.green);
        g2d.setPaint(redtowhite);
        g2d.fill(new Ellipse2D.Double(10, 150, 100, 70));
        g2d.setPaint(Color.black);


        g2d.setPaint(Color.gray);
        int x3 = 150;
        int y3 = 150;

        g2d.setStroke(wideStroke);
        g2d.draw(new Arc2D.Double(x3, y3, 100, 70, 80, 260,
                Arc2D.OPEN));
        //----------------------------------------------------------------------
        float[] dash1 = {2f, 0f, 2f};
        float[] dash2 = {1f, 1f, 1f};
        float[] dash3 = {4f, 0f, 2f};
        float[] dash4 = {4f, 4f, 1f};



        BasicStroke bs1 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash1, 2f);

        BasicStroke bs2 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash2, 2f);

        BasicStroke bs3 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash3, 2f);

        BasicStroke bs4 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash4, 2f);

        g2d.setStroke(bs1);
        g2d.drawLine(20, 250, 250, 250);

        g2d.setStroke(bs2);
        g2d.drawLine(20, 290, 250, 290);

        g2d.setStroke(bs3);
        g2d.drawLine(20, 330, 250, 330);

        g2d.setStroke(bs4);
        g2d.drawLine(20, 370, 250, 370);

        RenderingHints rh = new RenderingHints(
                RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);

        rh.put(RenderingHints.KEY_RENDERING,
                RenderingHints.VALUE_RENDER_QUALITY);

        g2d.setRenderingHints(rh);

        bs1 = new BasicStroke(8, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_BEVEL);
        g2d.setStroke(bs1);
        g2d.drawLine(300, 30, 400, 30);

        bs2 = new BasicStroke(8, BasicStroke.CAP_ROUND,
                BasicStroke.JOIN_BEVEL);
        g2d.setStroke(bs2);
        g2d.drawLine(300, 80, 400, 80);

        bs3 = new BasicStroke(8, BasicStroke.CAP_SQUARE,
                BasicStroke.JOIN_BEVEL);
        g2d.setStroke(bs3);
        g2d.drawLine(300, 130, 400, 130);

        bs4 = new BasicStroke();
        g2d.setStroke(bs4);

        int w = 150;
        int h = 150;
        int compositeRule = AlphaComposite.SRC_OVER;
        float alphaValue = 0.5f;
        AlphaComposite ac;
        BufferedImage bi = new BufferedImage(300, 300, BufferedImage.TYPE_INT_ARGB);
        Graphics2D big = bi.createGraphics();

        ac = AlphaComposite.getInstance(compositeRule, alphaValue);

        big.setColor(Color.red);
        big.fill(new Ellipse2D.Double(0, h / 3, 2 * w / 3, h / 3));
        big.setColor(Color.blue);
        big.setComposite(ac);
        big.fill(new Ellipse2D.Double(w / 3, h / 3, 2 * w / 3, h / 3));

        g2d.drawImage(bi, null, 0, 0);









    }
}

class Main
{
    public static void main(String[] args)
    {
        Shape obj1;
        obj1=new Rectangle2D.Float(0,0,0,0);

        Plansza p1;
        p1=new Plansza(obj1);

        JFrame jf=new JFrame();

        jf.add(p1);
        jf.setTitle("Test grafiki");
        jf.setSize(600,600);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jf.setVisible(true);
    }
}