Tell me why the maximum window size is not set?

Question

Java

Good day. I'm just starting to learn Java, and at every step I meet a lot of pitfalls. Sometimes mistakes are stupid and banal. I can sit all day trying to solve some nonsense. Maybe it's wrong to ask some stupid questions, but already understood, it's better to ask and move on. In this connection, I ask you to help me in solving this problem. I need to set the size of the form so that its minimum size is 400 by 400 and the maximum is 600 by 600.

JFrame frame = new JFrame("Новая форма");
    frame.setVisible(true);
    frame.setSize(400, 400);
    frame.setMinimumSize(new Dimension(400, 400));
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setMaximumSize(new Dimension(600, 600));

If you restrict the user by reducing the window, everything worked out, then the setMaximumSize method does not work at all. Why?

Answer 1

Superficial googling shows that this is a known bug , and that one must either wait for a fix or use alternatives.

Answer 2

This is an ancient Swing bug on Windows that will most likely not be fixed. You can fix this manually with a ComponentListener, use it to catch resize events and manually resize the form. Example:

final JFrame frame = new JFrame();
        frame.addComponentListener(new ComponentAdapter() {
            @Override
            public void componentResized(ComponentEvent e) {
                int width = e.getComponent().getWidth();
                int height = e.getComponent().getHeight();
                int newWidth = width;
                int newHeight = height;
                if (width > 600) {
                    newWidth = 600;
                }
                if (width < 400) {
                    newWidth = 400;
                }
                if (height > 600) {
                    newHeight = 600;
                }
                if (height < 400) {
                    newHeight = 400;
                }
                if (newHeight != height || newWidth != width) {
                    frame.setSize(newWidth, newHeight);
                }
            }
        });