列出包的所有子包(当它们的类被动态加载时)

import java.util.ArrayList;
import java.util.List;

public class PackageUtils {
    public static List<String> getAllSubPackages(String packageName) {
        List<String> subPackages = new ArrayList<>();
        Package[] packages = Package.getPackages();

        for (Package pkg : packages) {
            String pkgName = pkg.getName();
            if (pkgName.startsWith(packageName) && !pkgName.equals(packageName)) {
                String subPackage = pkgName.substring(packageName.length() + 1);
                if (!subPackage.contains(".")) {
                    subPackages.add(subPackage);
                }
            }
        }

        return subPackages;
    }

    public static void main(String[] args) {
        String packageName = "com.example.package";
        List<String> subPackages = getAllSubPackages(packageName);

        System.out.println("Sub-packages of " + packageName + ":");
        for (String subPackage : subPackages) {
            System.out.println(subPackage);
        }
    }
}