循环遍历JPanel中的嵌套字段

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

public class JPanelTraversal {

    public static void traverseJPanel(JPanel panel) {
        Component[] components = panel.getComponents();

        for (Component component : components) {
            if (component instanceof JPanel) {
                // 递归调用
                traverseJPanel((JPanel) component);
            } else {
                // 对非嵌套字段进行操作，这里只是打印组件的名称
                System.out.println(component.getName());
            }
        }
    }

    public static void main(String[] args) {
        // 创建一个JFrame并设置布局为FlowLayout
        JFrame frame = new JFrame();
        frame.setLayout(new FlowLayout());

        // 创建一个JPanel作为父级容器
        JPanel parentPanel = new JPanel();
        parentPanel.setLayout(new FlowLayout());

        // 创建两个子级JPanel并添加到父级容器中
        JPanel childPanel1 = new JPanel();
        JPanel childPanel2 = new JPanel();

        parentPanel.add(childPanel1);
        parentPanel.add(childPanel2);

        // 向子级JPanel中添加一些组件
        JLabel label1 = new JLabel("Label 1");
        JLabel label2 = new JLabel("Label 2");

        childPanel1.add(label1);
        childPanel2.add(label2);

        // 将父级JPanel添加到JFrame中
        frame.add(parentPanel);

        // 遍历JPanel中的嵌套字段
        traverseJPanel(parentPanel);

        // 显示窗口
        frame.pack();
        frame.setVisible(true);
    }
}