Cant change content on a JPanel

I have a JFrame, which has a JPanel called gamePanel added to it. The game calls the method renderPlayerInfo multiple times after the main frame is set to visible. However, the panel does not change after the first time I call the method.

renderPlayerInfo

void renderPlayerInfo(JPanel gamePanel) {
Font renderFontBold = new Font("Arial", Font.BOLD, 16);
Font renderFont = new Font("Arial", Font.PLAIN, 16);
renderPanel.removeAll();
System.out.println("e");
int yRender = 0;
for (int i = 0; i < players.size(); i++) {
JPanel playerPanel = new JPanel(null);
playerPanel.setBounds(0, yRender, 300, 110);
playerPanel.setBackground(new Color(204, 227, 199));
JLabel playerLabel = new JLabel("Player " + String.valueOf(i + 1));
playerLabel.setFont(renderFontBold);
playerLabel.setBounds(10, 10, 300, 18);
JLabel playerToken = players.get(i).getPlayerToken(244, 0);
playerPanel.add(playerToken);
JLabel moneyIcon = new JLabel(new ImageIcon("./res/money.jpg"));
moneyIcon.setBounds(30, 40, 64, 32);
playerPanel.add(moneyIcon);
JLabel moneyAmount = new JLabel("£" + moneyFormatter.format(players.get(i).playerMoney));
moneyAmount.setFont(renderFont);
moneyAmount.setBounds(100, 48, 200, 18);
playerPanel.add(moneyAmount);
JPanel separatorPanel = new JPanel();
separatorPanel.setBounds(0, 108, 300, 2);
separatorPanel.setBackground(new Color(146, 159, 149));
playerPanel.add(separatorPanel);
playerPanel.add(playerLabel);
renderPanel.add(playerPanel);
if (i + 1 == playerTurn) {
JLabel turnPointer = new JLabel(new ImageIcon("./res/turnPointer.png"));
turnPointer.setBounds(70, -12, 64, 64);
playerPanel.add(turnPointer);
}
yRender += 110;
}
renderPanel.repaint();
gamePanel.add(renderPanel);
gamePanel.repaint();
}

I tried adding renderPanel.repaint() but this does not seem to change anything.

> Cant change content on a JPanel

It can.

But generally speaking, one would not achieve that in the way you are trying to do. Instead of ripping out all of the components and replacing them with new, one would ordinarily update the models of the existing components so that when they are repainted, the view will be as you want. For example, use JLabel.setText() instead of creating a whole new JLabel. Of course, this does require you to keep references to the components you will want to update in a way that enables you to perform such modifications cleanly. Under some circumstances, it might make sense to create custom components to help you with that.

Also, however, it is unclear from what context you are calling renderPlayerPanel(), but inasmuch as it modifies GUI components, it needs to run on the event dispatch thread. If it's not running there already, then you can fix that by having the invoker(s) go through SwingUtilities.invokeAndWait() or SwingUtilities.invokeLater() to run it.

> I tried adding renderPanel.repaint() but this does not seem to change anything.

Not surprising. You're already repainting that panel's container; it has no additional effect to also repaint the panel directly.