如何获取正在扩展的类的名称

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

public class ClassName {
    public static void main(String[] args) throws ClassNotFoundException {
        // 获取正在扩展的类的名称
        String className = getClassName();
        System.out.println("正在扩展的类名称：" + className);
    }

    private static String getClassName() throws ClassNotFoundException {
        // 获取调用者的类名
        String callerClassName = ClassName.class.getName();
        callerClassName = callerClassName.substring(callerClassName.lastIndexOf('.') + 1);

        // 通过调用类的构造方法获取类名
        Class<?> callerClass = Class.forName(callerClassName);
        Method[] methods = callerClass.getDeclaredMethods();
        for (Method method : methods) {
            if (method.getName().equals("getClassName")) {
                Object[] args = method.getParameters();
                if (args.length == 0) {
                    return (String) method.invoke(null);
                } else {
                    throw new IllegalArgumentException("Invalid method signature");
                }
            }
        }
        throw new ClassNotFoundException("Class not found: " + callerClassName);
    }
}