Java Programming Tutorial - 84 - Drawing Graphics

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

public class Drawing {
   public static void main(String args[ ]) {
      JFrame f = new JFrame("Title");
      f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      Draws d = new Draws();
      f.add(d);
      f.setSize(400, 250);
      f.setVisible(true);
   }
}

class Draws extends JPanel {
   public void paintComponent(Graphics g) {
      super.paintComponent(g);
      this.setBackground(Color.WHITE);

      g.setColor(Color.BLUE);
      g.fillRect(10, 10, 100, 30);

      g.setColor(Color.RED);
      g.fillRect(10, 50, 100, 30);

      g.setColor(Color.BLACK);
      g.drawString("My drawing program", 10, 90);
   }
}