Icones?

package pacote;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JPasswordField;

public class Testes extends JFrame implements ActionListener
{  
	JPasswordField password = new JPasswordField(5);
	String password1;
	JButton b,b1,sair,a;
	int senha ;
	 public Testes ()
	 	{
	 	
	 	setSize(500,500);
	 	setDefaultCloseOperation(EXIT_ON_CLOSE);
		JPanel painel = new JPanel();
		ImageIcon icone1 = new ImageIcon("win32_MoveDrop32x32.gif");
		b = new JButton ("Gerar Senha");
		b1 =new JButton(icone1);
		sair = new JButton("Sair");
		painel.add(b);
		b.addActionListener(this);
		painel.setBounds(150,150,100,100);
		painel.add(password);
		setContentPane(painel);
		senha = (int)(Math.random()*9999);
		password1 =senha + " ";
		painel.add(b1);
		b1.addActionListener( this);
		painel.add(sair);
		sair.addActionListener(this);
		show();
		
		
		}

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

	
	public void actionPerformed(ActionEvent k)
{
	if (k.getSource().equals(b))
		{
	System.out.println("Sua nova senha é :"+password1);
	}
	if (k.getSource().equals(b1))
	{
	if (password1.compareTo(password.getText()) == 0)

	{
	System.out.println("Acesso Permitido");
	}
	else 
	{ 
	System.out.println("Senha Incorreta");
	}
		}
	if (k.getSource().equals(sair))
	System.exit(0);
	if (k.getSource().equals(a))
	
	{    
	}
}

		
	


}