Java运行失败，求解答！

代码：

package com.example;

import java.lang.reflect.Field;


public class Main {

  public static void main(String[] args) throws Exception {
    
    Object person = new Person("Monin");
    Class cls = person.getClass(); //获取class信息
    Field field = cls.getDeclaredField("name"); //反射获取字段
    Object value = field.get(person); //获取字段的值
    System.out.println(value);
  }
}

class Person {
  private String name;
  
  public Person(String name) {
    this.name = name;
  }
}

异常：

java.lang.IllegalAccessException: Class java.lang.Class.example.Main> cannot access private  field java.lang.String com.example.Person.name of class java.lang.Class.example.Person>
    at java.lang.reflect.Field.get(Native Method)
    at com.example.Main.main(Main.java:13)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.duy.android.compiler.java.Java.run(Unknown Source:335)
    at com.duy.ide.javaide.run.activities.ExecuteActivity.executeDex(Unknown Source:42)
    at com.duy.ide.javaide.run.activities.ExecuteActivity.exec(Unknown Source:19)
    at com.duy.ide.javaide.run.activities.ExecuteActivity.access$100(Unknown Source:0)
    at com.duy.ide.javaide.run.activities.ExecuteActivity$1.run(Unknown Source:8)
    at java.lang.Thread.run(Thread.java:929)

我在手机Java N-IDE上跑的，有什么问题？

私有的字段获取值还需要加上这个 field.setAccessible(true);