Question

用JAVA简单叫我做几个按钮的排版。。要用GridBagLayout..

就三个按钮

Answer 1

public class TestFrame extends JFrame {
        public TestFrame() {
            init();
        }
        
        private void init() {
            setSize(400, 100);
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            setLocationRelativeTo(null);
            
            JPanel panel = new JPanel(new GridBagLayout());
            add(panel);
            
            GridBagConstraints gbc = new GridBagConstraints();
            
            gbc.gridx = 0;
            gbc.gridy = 0;
            gbc.gridwidth = 3;
            gbc.gridheight = 1;
            gbc.weightx = 0.75;
            gbc.weighty = 0.5;
            gbc.fill = GridBagConstraints.BOTH;
            JButton button9 = new JButton("Button9");
            panel.add(button9, gbc);
            
            gbc.gridy = 1;
            JButton button10 = new JButton("Button10");
            panel.add(button10, gbc);
            
            gbc.gridx = 3;
            gbc.gridy = 0;
            gbc.gridwidth = 1;
            gbc.gridheight = 2;
            gbc.weightx = 0.25;
            gbc.weighty = 1.0;
            JButton button8 = new JButton("Button8");
            panel.add(button8, gbc);
            
            setVisible(true);
        }
}

Answer 2

整体是GridBagLayout布局，一行两列。在左边的一列中是GridBagLayout，一列两行

Answer 3

使用gridlayout布局强调的是每个构件大小相同，如果想做出你要的那个图，克服这个用到嵌套就可以了，你可以先用grilayout布局弄出一行两列，然后嵌套到第一个网格中，就可以了。。。