package graphtest;
import javax.swing.*;
import java.awt.*;
import java.awt.Color;
import java.awt.geom.*;
import java.awt.image.*;
public class Panel extends JPanel
{ @Override // переозначення методу малювання
  public void paintComponent (Graphics g) 
  { super.paintComponent(g); 
    g.setColor(Color.yellow);
    Graphics2D g2 = (Graphics2D) g;
    BasicStroke pen = new BasicStroke(6, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
    BufferedImage buffer = new BufferedImage (20,20,BufferedImage.TYPE_INT_RGB);
    Graphics2D bufferg = buffer.createGraphics ();
    bufferg.setColor(Color.yellow);
    bufferg.fill (new Rectangle2D.Double (0.0, 0.0, 20.0, 20.0));// білий квадрат
    bufferg.setStroke (pen); 
    bufferg.setColor(Color.red);
    bufferg.draw (new Line2D.Double (0, 0,20,20));     // зелені діагоналі
    bufferg.draw (new Line2D.Double (0,20,20, 0));
    TexturePaint tp = new TexturePaint (buffer,new Rectangle2D.Double (0,0,20,20));
    g2.setPaint(tp);
    g2.fill (new Rectangle2D.Double (160, 20, 160, 160));         
    GradientPaint gp = new GradientPaint (40, 40, Color.red,120, 120, Color.yellow);
    g2.setPaint (gp);
    g2.fill (new Ellipse2D.Double (20, 20, 160, 160)); // коло         
    gp = new GradientPaint (20, 180, Color.red,60, 180, Color.yellow, true);
    g2.setPaint (gp);
    g2.fill (new Ellipse2D.Double (10, 190, 330, 120));// еліпс
  }
}