查找类的子类并返回元素列表

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

public class SubclassFinder {
    public static List<Class<?>> findSubclasses(Class<?> parentClass) {
        List<Class<?>> subclasses = new ArrayList<>();
        Package[] packages = Package.getPackages();

        for (Package pkg : packages) {
            String packageName = pkg.getName();
            List<Class<?>> classes = getClasses(packageName);

            for (Class<?> clazz : classes) {
                if (parentClass.isAssignableFrom(clazz) && !clazz.equals(parentClass)) {
                    subclasses.add(clazz);
                }
            }
        }

        return subclasses;
    }

    private static List<Class<?>> getClasses(String packageName) {
        List<Class<?>> classes = new ArrayList<>();

        // TODO: 实现根据包名获取所有类的逻辑

        return classes;
    }
}

// 调用示例
List<Class<?>> subclasses = SubclassFinder.findSubclasses(BaseClass.class);