Erreur suppression de JPanel

import java.awt.Color;
import java.awt.FlowLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;


public class MyWindow extends JFrame {

	private JPanel panel1, panel2;
	private JLayeredPane layeredPane;
	
	public MyWindow()
	{
		super("test de m*****");
		setSize(500,500);
		
		getContentPane().setBackground(Color.BLACK);
		
		
		 /*
		layeredPane = new JLayeredPane();
		layeredPane.setOpaque(true);
		layeredPane.setBackground(Color.BLACK);
		*/
	
		// JPanel1
		this.panel1 = new JPanel();
		this.panel1.setBackground(Color.RED);
		
		// JPanel1
		this.panel2 = new JPanel();
		this.panel2.setBackground(Color.GREEN);
		
		
		getContentPane().add(this.panel1);
		getContentPane().add(this.panel2);
		
		//pack();
		setVisible(true);
	}

	public void setPanel1(JPanel panel1) {
		this.panel1 = panel1;
	}

	public JPanel getPanel1() {
		return panel1;
	}

	public void setPanel2(JPanel panel2) {
		this.panel2 = panel2;
	}

	public JPanel getPanel2() {
		return panel2;
	}
	
}

public class Launch {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		MyWindow w = new MyWindow();
		System.out.println(w.getContentPane().getComponentCount());
	}

}

public class Launch {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		MyWindow w = new MyWindow();
                w.remove(w.getJPanel2());
		System.out.println(w.getContentPane().getComponentCount());
	}

}