Java Swing - GUI freezes when completing calculations after clicking a button

Question

I have created a scientific calculator program. What my program does is take \"label\" which is the string inputted by the user using buttons and evaluate the expression. What m

Answer 1

In stead of wrapping the call in a regular Thread, make use of Swingutilities. You will need to do this since Swing isn't threadsafe. This way you will still be working on the EDT.

 SwingUtilities.invokeLater(() -> {
                try {
                    label2.setText(bracket(splitLabel(label.getText())));
                } catch (Exception e) {
                    e.printStackTrace();
                }
            });