Urgente: Problema com paintComponets do JLabel

public void initComponents(){
			
			Container c = getContentPane(); ;

			MyClass oval = new MyClass();			
			c.add(oval); // Adiciona o DESENHO DE BOLA NO CONTAINER ****** SO q nao ta funfando
			
			lb1 = new JLabel();
			lb2 = new JLabel();
			lb3 = new JLabel();
			lb4 = new JLabel();
			lb5 = new JLabel();
			lb6 = new JLabel();
			lb7 = new JLabel();			
			
			setBounds(200,200,650,380);
			setLayout(null);
			
			panel.setLayout(new java.awt.GridLayout(1, 0));
			panel.setBorder(new javax.swing.border.TitledBorder("Tree"));
			panel.setBounds(50, 30, 250, 284);
			
			add(panel);			
			panel.setLayout(null);
			lb1.setBounds(115, 5, 10, 60);		
			panel.add(lb1);	
			lb2.setBounds(60, 5, 10, 170);
			panel.add(lb2);			
			lb3.setBounds(175, 5, 10, 170);
			panel.add(lb3);
			lb4.setBounds(15, 5, 10, 290);
			panel.add(lb4);			
			lb5.setBounds(95, 5, 10, 290);
			panel.add(lb5);
			lb6.setBounds(140, 5, 10, 290);
			panel.add(lb6);
			lb7.setBounds(215, 5, 10, 290);
			panel.add(lb7);			
			
			imprime();
			
		}
		public void imprime(){
			lb1.setText("1");
			lb2.setText("2");
			lb3.setText("3");
			lb4.setText("4");
			lb5.setText("5");
			lb6.setText("6");
			lb7.setText("7");			
		}
		public static void main(String[] args){
			new reverse_Tree().show();
		}	
}
 class MyClass extends JLabel{
	 
	 public MyClass(){};
	 protected void paintComponent(Graphics g){
		    super.paintComponent(g);
		    g.drawOval(125, 5, 10, 60); 
		  }
	
 }