Does JList ever fire KeyEvents? Doesn’t seem so. Here’s an MRE

After submitting my implementation of a searchable JComboBox, I discovered that what the reporter actually wanted was quite different. They want the combo box field to stay non-editable but also to see typed symbols. The only way to achieve it is to introduce a separate text field in the dropdown menu (it’s how I see it, anyways)

I’m trying to make Minecraft but 2D,
but is there a way to make the Window Revalidate without making it invisible then make it visible back?

public class Main extends JFrame{ public static void main(String[] args) { JFrame jp1 = new JFrame(); jp1.setTitle(“Diagram”); Print m = new Print(); jp1.setLayout(null); jp1.setSize(500,500); m.setBounds(0,0,500,500); jp1.add(m); jp1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jp1.setVisible(true); } static class Print extends JPanel{ public void drawDiagram(Graphics g, double[] x, double[] y){ g.setColor(Color.BLUE); int scale = 100; int lastX = 0, lastY = 0; for […]

Whenever I try to click my Update button, and input the user id that I inputted upon registration; even if I entered the correct user id, it still prompts that my user id is invalid. What can be the mistake on my code?

What I am currently trying to make are 3 panels in a frame that is laid out via GridLayout(), and each of the 3 panels would have their own panels within them that would be containing text. The top-most panel would only contain a single line (a fake email address), while the panel below it would contain the contents of an email. However, when I try setting senderPanel (the panel within the other panel), the panel size does not change and stays zero.