使用反射输出对象中变量的所有值

import java.lang.reflect.Field;

public class ReflectionExample {
    public static void main(String[] args) {
        // 创建一个示例对象
        Person person = new Person("John Doe", 30, "john@example.com");

        // 获取对象的Class对象
        Class<?> clazz = person.getClass();

        // 获取对象的所有字段
        Field[] fields = clazz.getDeclaredFields();

        // 遍历字段并输出值
        for (Field field : fields) {
            // 设置字段的可访问性
            field.setAccessible(true);

            try {
                // 获取字段的值并输出
                Object value = field.get(person);
                System.out.println(field.getName() + ": " + value);
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
    }
}

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

    public Person(String name, int age, String email) {
        this.name = name;
        this.age = age;
        this.email = email;
    }
}