如何使用反射确定属性类型？

const obj = {
  name: 'John',
  age: 30,
  isActive: true
};

for (const key in obj) {
  console.log(`${key} is of type ${typeof obj[key]}`);
}

public class Person {
  private String name;
  private int age;
  private boolean isActive;

  // getters and setters

  public static void main(String[] args) {
    Person person = new Person();
    person.setName("John");
    person.setAge(30);
    person.setActive(true);

    Class<?> nameClass = person.getName().getClass();
    Class<?> ageClass = Integer.class;
    Class<?> isActiveClass = Boolean.class;

    System.out.println("name is of type " + nameClass.getName());
    System.out.println("age is of type " + ageClass.getName());
    System.out.println("isActive is of type " + isActiveClass.getName());
  }
}

class Person:
    def __init__(self, name, age, is_active):
        self.name = name
        self.age = age
        self.is_active = is_active

person = Person('John', 30, True)

name_type = type(person.name)
age_type = type(person.age)
is_active_type = type(person.is_active)

print(f'name is of type {name_type}')
print(f'age is of type {age_type}')
print(f'is_active is of type {is_active_type}')