使用 GridBagLayout 布局管理器在 JFrame 中排列组件 [关闭]

我需要这样安排组件：在第一行中有 2 个按钮，占据窗口整个高度的一半，它们的宽度比是 1:2，在第二行中一切都相同，但宽度比是2:1。我使用 GridBagLayout 来布局组件，因为......我发现它对于我的应用程序布局来说足够简单和灵活，但它并不像我想象的那样工作。

我写了代码：

Container pane = getContentPane();
pane.setLayout(new GridBagLayout());
GridBagConstraints layout = new GridBagConstraints();

JButton openButton = new JButton(OPEN_BUTTON_TEXT);
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.33;
layout.weighty = 0.5;
layout.gridx = 0;
layout.gridy = 0;
layout.gridwidth = 1;
layout.gridheight = 1;
pane.add(openButton, layout);

JButton saveButton = new JButton(SAVE_BUTTON_TEXT);
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.66;
layout.weighty = 0.5;
layout.gridx = 1;
layout.gridy = 0;
layout.gridwidth = 1;
layout.gridheight = 1;
pane.add(saveButton, layout);

JButton reverseButton = new JButton(REVERSE_BUTTON_TEXT);
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.66;
layout.weighty = 0.5;
layout.gridx = 0;
layout.gridy = 1;
layout.gridwidth = 1;
layout.gridheight = 1;
pane.add(reverseButton, layout);

JButton calculateButton = new JButton("Рассчитать");
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.33;
layout.weighty = 0.5;
layout.gridx = 1;
layout.gridy = 1;
layout.gridwidth = 1;
layout.gridheight = 1;
pane.add(calculateButton, layout);

我的期望： 图1

最终输出： 图像 2

我尝试从 JPanel 创建行并在其中放置按钮，但最终输出与预期相差甚远。代码：

Container pane = getContentPane();
pane.setLayout(new GridBagLayout());
GridBagConstraints layout = new GridBagConstraints();

JPanel panel1 = new JPanel();
panel1.setBackground(Color.BLUE);
panel1.setLayout(new GridBagLayout());
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 1;
layout.weighty = 0.5;
layout.gridx = 0;
layout.gridy = 0;
layout.gridwidth = 1;
layout.gridheight = 1;
pane.add(panel1, layout);

JButton openButton = new JButton(OPEN_BUTTON_TEXT);
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.33;
layout.weighty = 1;
layout.gridx = 0;
layout.gridy = 0;
layout.gridwidth = 1;
layout.gridheight = 1;
panel1.add(openButton, layout);

JButton saveButton = new JButton(SAVE_BUTTON_TEXT);
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.66;
layout.weighty = 1;
layout.gridx = 1;
layout.gridy = 0;
layout.gridwidth = 1;
layout.gridheight = 1;
panel1.add(saveButton, layout);


JPanel panel2 = new JPanel();
panel2.setBackground(Color.GREEN);
panel1.setLayout(new GridBagLayout());
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 1;
layout.weighty = 0.5;
layout.gridx = 0;
layout.gridy = 1;
layout.gridwidth = 1;
layout.gridheight = 1;
pane.add(panel2, layout);

JButton reverseButton = new JButton(REVERSE_BUTTON_TEXT);
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.66;
layout.weighty = 1;
layout.gridx = 0;
layout.gridy = 0;
layout.gridwidth = 1;
layout.gridheight = 1;
panel2.add(reverseButton, layout);

JButton calculateButton = new JButton("Рассчитать");
layout.fill = GridBagConstraints.BOTH;
layout.weightx = 0.33;
layout.weighty = 1;
layout.gridx = 1;
layout.gridy = 0;
layout.gridwidth = 1;
layout.gridheight = 1;
panel2.add(calculateButton, layout);

最终输出：图像 3

您能告诉我如何配置所需的组件排列吗？