在GridBagLayout中的组件之间放置空格

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class GridBagLayoutExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("GridBagLayout Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel();
        panel.setLayout(new GridBagLayout());

        // 创建一个空格组件
        GridBagConstraints spacer = new GridBagConstraints();
        spacer.insets = new Insets(10, 10, 10, 10); // 设置边距

        // 添加组件和空格到面板
        JButton button1 = new JButton("Button 1");
        panel.add(button1, spacer);

        JButton button2 = new JButton("Button 2");
        panel.add(button2, spacer);

        JButton button3 = new JButton("Button 3");
        panel.add(button3, spacer);

        frame.add(panel);
        frame.pack();
        frame.setVisible(true);
    }
}