java访问修饰符

package com.use;

public class AccessModifier {
     public int n1  = 100;
     protected int  n2 = 200;
     int n3 = 300;
     private int n4 = 400;

     public void m1() {
         System.out.print("n1=" + n1 + " " + "n2=" + n2 + " " + "n3=" + n3 + " " + "n4=" + n4);
     }
}

class Test{

     public  void myTest(){
          AccessModifier accessModifier = new AccessModifier();
          int n1 = accessModifier.n1;
          int n2 = accessModifier.n2;
          int n3 = accessModifier.n3;
//          同一包下的不同类 不能直接访问private
//          int n4 = accessModifier.n4;


     }
}