GUI Image Button GIF Transparent Bg

import java.awt.BorderLayout;

import java.awt.EventQueue;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.border.EmptyBorder;

import javax.swing.JButton;

import javax.swing.ImageIcon;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import java.awt.Color;

import java.awt.event.ActionListener;

import java.awt.event.ActionEvent;

public class JButtonTransparentGIF extends JFrame {

private JPanel contentPane;

public static void main(String[] args) {

EventQueue.invokeLater(new Runnable() {

public void run() {

try {

JButtonTransparentGIF frame = new JButtonTransparentGIF();

frame.setVisible(true);

} catch (Exception e) {

e.printStackTrace();

}

}

});

}

public JButtonTransparentGIF() {

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setBounds(100, 100, 450, 300);

contentPane = new JPanel();

contentPane.setBackground(Color.DARK_GRAY);

contentPane.setForeground(Color.BLACK);

contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

setContentPane(contentPane);

contentPane.setLayout(null);

JButton btnNewButton = new JButton(new ImageIcon(JButtonTransparentGIF.class.getResource("/img/play now.gif")));

btnNewButton.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

JOptionPane.showMessageDialog(null, "Works!");

}

});

btnNewButton.setBounds(72, 71, 328, 143);

btnNewButton.setOpaque(false);

btnNewButton.setContentAreaFilled(false);

btnNewButton.setBorderPainted(false);

btnNewButton.setFocusPainted(false);

contentPane.add(btnNewButton);

}

}