javk.swing.grouplayout在jdk 1.5中不存在

import javax.swing.*;
import java.awt.*;

public class GroupLayoutDemo {
    public static void main(String[] args) {
        JFrame frame = new JFrame("GroupLayout Demo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 200);

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

        JLabel label = new JLabel("Name:");
        JTextField textField = new JTextField(10);
        layout.setHorizontalGroup(
            layout.createSequentialGroup()
                .addComponent(label)
                .addComponent(textField)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                .addComponent(label)
                .addComponent(textField)
        );

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