I have a dark-gray JPanel with a JLabel on it. I set new Color(0, 0, 0, .5f) (tranparent) as the background of the JLabel and I change the text several times using a button. The problem is, everytime the text is changed, the previous text still remains behind the new text. I change the text from "123456789" to "1234567", "12345" and "123". Here is the screenshot:
How do I get rid of this "shadow"? Here's the code:
public class TransparentJLabel extends JFrame {
private int i = 0;
private String[] value = {"123456789", "1234567", "12345", "123", "1"};
public TransparentJLabel() {
setSize(300, 160);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setLayout(null);
JPanel panel = new JPanel();
panel.setBackground(new Color(102, 102, 102));
panel.setLayout(null);
panel.setBounds(0, 0, 300, 160);
final JLabel label = new JLabel();
label.setText(value[0]);
label.setFont(new Font("Times New Roman", 1, 36));
label.setForeground(new Color(255, 255, 255));
label.setBackground(new Color(0, 0, 0, .5f));
label.setHorizontalAlignment(SwingConstants.CENTER);
label.setOpaque(true);
label.setBounds(10, 10, 270, 70);
JButton button = new JButton();
button.setText("Change");
button.setBounds(100, 90, 90, 25);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
label.setText(value[++i]);
}
});
panel.add(label);
panel.add(button);
add(panel);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
new TransparentJLabel().setVisible(true);
}
});
}
}
