Ajuda de JFrame

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

public class Teste implements ActionListener {
	JFrame frame = new JFrame();
	JButton b = new JButton("teste");

	Teste() {
		
		frame.setVisible(true);
		frame.setSize(500,500);
		frame.getContentPane().setLayout(null);
		frame.getContentPane().add(b);
		b.setBounds(50,50,50,50);
		b.addActionListener(this);
		
	}

	public static void main(String[] args) {
		new Teste();
	}

	public void actionPerformed(ActionEvent e) {
		if(e.getSource() == b) {
			frame.remove(b);
		}
	}
}