Updating a JLabel within a JFrame

Question

I\'ve been searching around this site and the internet for hours trying to figure out how to fix this problem. I\'m creating a game and it\'s my first time using graphics. I

Answer 1

Don't sleep or otherwise block on the AWT Event Dispatch Thread (EDT).

Use javax.swing.Timer instead. Note: not any other class of the same name in a different package.

            javax.swing.Timer timer =
                new javax.swing.Timer(2500, event -> {
                    testing.setText("hi");
                });
            timer.setRepeats(false);
            timer.start();