JPanel Fade-Animation Java Swing funktioniert nicht ⇐ Java

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package JAnimator;

import java.awt.AlphaComposite;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;

public class JAnimator {
public static class fade_animation extends JPanel {
private float opacity = 1.0f;
private final Rectangle innerArea = new Rectangle();
private Timer timer;
private JComponent target;
private final JPanel parent;
private int Delay;
private boolean HasStarted = false;
private boolean isIn = true;
boolean isPaintingParent=false;
boolean AllowCustomPainting = true;
public fade_animation(JComponent targetComponent, int SpeedMilisec, int DelayMilisec) {
this.target = targetComponent;
parent = (JPanel) target.getParent();
this.Delay = DelayMilisec;
setSize(target.getSize());
setLocation(target.getLocation());
parent.add(this);

// Timer to control the fade effect
timer = new Timer(SpeedMilisec, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {

if (isIn) {
opacity += 0.1f;
repaint();
if (opacity >= 1.0f) {
opacity = 1.0f;
timer.stop();
AllowCustomPainting = false;
// Revalidate the layout to ensure components are updated

}else if(opacity==0.1f){

}
} else {
opacity -= 0.1f;
repaint();
if (opacity  {
try {
Thread.sleep(Delay + 200);
HasStarted = true;

timer.restart();

} catch (InterruptedException ex) {
Logger.getLogger(JAnimator.class.getName()).log(Level.SEVERE, null, ex);
}
}).start();
} catch (Exception e) {
}
}

public void playOut() {
isIn = false;
opacity = 1.0f;
try {
new Thread(() -> {
try {
Thread.sleep(Delay + 200);
HasStarted = true;

target.hide();
timer.restart();
} catch (InterruptedException ex) {
Logger.getLogger(JAnimator.class.getName()).log(Level.SEVERE, null, ex);
}
}).start();
} catch (Exception e) {
}
}

@Override
public Dimension getPreferredSize() {
Dimension size = target.getPreferredSize();
return size;
}

@Override
protected void paintChildren(Graphics g) {
Graphics2D g2 = (Graphics2D) g.create();

if (AllowCustomPainting) {
// Paint the background (transparent)
super.paintComponent(g);

if (HasStarted) {
g2.setComposite(AlphaComposite.SrcOver.derive(opacity));
super.paintChildren(g2);
g2.dispose();
}
} else {
if (isIn) {
repaint();
target.paint(g2);  // Directly paint the target component
parent.updateUI();  // Update the UI to reflect any changes
target.setVisible(true);
} else {
target.setVisible(false);
}
}
}

}
}

Wie kann ich alle Komponenten gezielt malen, da dies nur manuell funktioniert? Ich habe bereits versucht super.paintChildren(g2);‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎ ‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎‎ ‎