code: import java.awt.Color;
  import java.awt.Graphics;
  import javax.swing.JFrame;
  
  public class FractalTree extends JFrame {
  
      public FractalTree() {
          super("Fractal Tree");
          setBounds(100, 100, 800, 600);
          setResizable(false);
          setDefaultCloseOperation(EXIT_ON_CLOSE);
      }
  
      private void drawTree(Graphics g, int x1, int y1, double angle, int depth) {
          if (depth == 0) return;
          int x2 = x1 + (int) (Math.cos(Math.toRadians(angle)) * depth * 10.0);
          int y2 = y1 + (int) (Math.sin(Math.toRadians(angle)) * depth * 10.0);
          g.drawLine(x1, y1, x2, y2);
          drawTree(g, x2, y2, angle - 20, depth - 1);
          drawTree(g, x2, y2, angle + 20, depth - 1);
      }
  
      @Override
      public void paint(Graphics g) {
          g.setColor(Color.BLACK);
          drawTree(g, 400, 500, -90, 9);
      }
  
      public static void main(String[] args) {
          new FractalTree().setVisible(true);
      }
  }
  