Fade out an image: image gradually get more transparent until it is completely invisible.
import java.awt.AlphaComposite;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
public class FadeOutImage extends JPanel implements ActionListener {
Image myImage = new ImageIcon("a.jpg").getImage();
Timer timer = new Timer(20, this);
private float alpha = 1f;
public FadeOutImage() {
timer.start();
}
public void paint(Graphics g) {
super.paint(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha));
g2d.drawImage(myImage, 10, 10, null);
}
public void actionPerformed(ActionEvent e) {
alpha += -0.01f;
if (alpha <= 0) {
alpha = 0;
timer.stop();
}
repaint();
}
public static void main(String[] args) {
JFrame frame = new JFrame("Fade out");
frame.add(new FadeOutImage());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 250);
frame.setVisible(true);
}
}
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