重写Java中的GroupLayout构造函数

import javax.swing.GroupLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class GroupLayoutExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("GroupLayout Example");
        JPanel panel = new JPanel();

        JLabel label1 = new JLabel("Label 1");
        JLabel label2 = new JLabel("Label 2");

        GroupLayout layout = new GroupLayout(panel);
        panel.setLayout(layout);

        layout.setAutoCreateGaps(true);
        layout.setAutoCreateContainerGaps(true);

        GroupLayout.SequentialGroup hGroup = layout.createSequentialGroup();
        hGroup.addComponent(label1);
        hGroup.addComponent(label2);
        layout.setHorizontalGroup(hGroup);

        GroupLayout.SequentialGroup vGroup = layout.createSequentialGroup();
        vGroup.addComponent(label1);
        vGroup.addComponent(label2);
        layout.setVerticalGroup(vGroup);

        frame.add(panel);
        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}