Why is the swing gui behaving strange?

I just started making my Java application on Minesweeper. The idea is a GridLayout JPanel inside a JFrame. But after executing the program I get some weird window. There is this strange gray corner on …

Swing – How to modify the border color of a JButton?

How to modify the border color of a JButton? I want to get something like this: But I canĀ“t modify the color, the borde is black: And If I try to add a LineBorder or any other borde, I am not able …

determine identification of a JCheckBox in itemListener

I have 4 check boxes, and the user can select or deselect them for their required settings, however, the program requires at least 1 check box to be checked in order to generate the required …

Curious behavior of java.awt.Component, setVisible(), LayoutManager

I was trying to create a GUI and found some curious behavior of java.awt.Component. I wanted to setVisible(true)/setVisible(false) an java.awt.Component by an external Event. But this only works when …

Moving code from ActionListener to main()

PROBLEM: I have following code for the java.awt.Button : Button btn = new Button(“abcde”); btn.addActionListener((ActionEvent e) -> { String s = btn.getLabel().toUpperCase(); btn….

Java and GUI – Where do ActionListeners belong according to MVC pattern?

I’m currently writing a template Java application and somehow, I’m not sure about where the ActionListeners belong if I wanted to cleanly follow the MVC pattern. The example is Swing based, but it’s …