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

public class Cercle extends JComponent{

	private int volume;

	public Cercle(){
		super();
		this.volume=0;
	}

	public void setVolume(int volume){
		this.volume=volume;
	}

	protected void paintComponent(Graphics pinceau){
		Graphics secondPinceau = pinceau.create();
        if (this.isOpaque()){
            secondPinceau.setColor(this.getBackground());
            secondPinceau.fillRect(0, 0, this.getWidth(), this.getHeight());
        }

        secondPinceau.setColor(Color.BLACK);
        secondPinceau.fillRect(0,0,this.getWidth(), this.getHeight());
        
        secondPinceau.setColor(Color.YELLOW);
	        for(int i=0;i<this.volume;i++){
	        	secondPinceau.fillOval(100*i,50,50,50);
	        }
        
        secondPinceau.setColor(Color.GRAY);
	        for(int i=0;i<10-this.volume;i++){
	        	secondPinceau.fillOval(100*i+this.volume*100,50,50,50);
	        }        
	}
}