如何使Java代码通用于处理不同类型的POJOS并向其中添加数据？

import java.lang.reflect.Field;

public class GenericPOJOHandler {
    public static <T> void addDataToPOJO(T pojo, String fieldName, Object data) {
        try {
            Class<?> clazz = pojo.getClass();
            Field field = clazz.getDeclaredField(fieldName);
            field.setAccessible(true);
            field.set(pojo, data);
        } catch (NoSuchFieldException | IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

public class Main {
    public static void main(String[] args) {
        User user = new User();
        GenericPOJOHandler.addDataToPOJO(user, "name", "John");
        GenericPOJOHandler.addDataToPOJO(user, "age", 25);
        
        Product product = new Product();
        GenericPOJOHandler.addDataToPOJO(product, "name", "iPhone");
        GenericPOJOHandler.addDataToPOJO(product, "price", 999.99);
    }
}

class User {
    private String name;
    private int age;
    
    // Getters and setters
}

class Product {
    private String name;
    private double price;
    
    // Getters and setters
}