Java Swing - GUI freezes when completing calculations after clicking a button
问题 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 my program does is, as soon as the equal button (button_eq) is clicked, it calls the splitLabel method which splits the label into an Arraylist of numbers and operators. It then calls brackets which searches for brackets within the ArrayList and completes sub calculations by calling the method calculate. However, before