import javax.swing.*; 
import java.awt.*; 

public class Volume extends JComponent {

	public Volume() {
		super();
	}

	@Override
    protected void paintComponent(Graphics pinceau) {
        Graphics secondPinceau = pinceau.create();
        this.setColor(this.getForeground());

        this.setBackground(new Color(255,30,255));

        this.setColor(Color.GRAY);
        this.fillOval(10, 70, 100, 100);
    }

}