如何在POJO中动态添加新字段？

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

    // Getters and setters
}

Class<?> personClass = Person.class;

Field newField = personClass.getDeclaredField("newField");
newField.setAccessible(true); // 设置可访问性

Field[] fields = personClass.getDeclaredFields();

Person person = new Person();
Field nameField = personClass.getDeclaredField("name");
nameField.setAccessible(true);
nameField.set(person, "John");

Field ageField = personClass.getDeclaredField("age");
ageField.setAccessible(true);
ageField.set(person, 25);

newField.set(person, "New Value");