[roots]

This could be one of the way that you define your own JComponent for your graphics object.

Code:

public class SmilePanel extends JComponent {
	
	
	public void paint(Graphics g) {
		super.paint(g);
		g.setColor(Color.red);
		g.drawOval(85, 75, 75, 75);
		g.setColor(Color.blue);
		g.drawOval(100, 95, 10, 10);
		g.drawOval(135, 95, 10, 10);

		g.drawArc(102, 115, 40, 25, 0, -180);
		g.drawString("Changing Face", 80, 175);
	}
	
	@Override
	public Dimension getPreferredSize() {
		Dimension dimension = new Dimension(200,200); // Change to required size
		return dimension;
	}	
}
...
getContentPane().add(new SmilePanel());