访问权限

package chapter02

package p1{
  package p2{
    class UserP2{
      var username="zhangshan"
      private var  password="1234" //当前类可以调用
      protected var email="123.com" //子类可以调用
      private[p2] var address="XXXXXX" //p2可以调用
      private [p3] var phone=186  //p3包可以调用
    }
  }


  package p3{

    import chapter02.p1.p2.UserP2

    class EmpP3{
      def test(): Unit ={
       var user= new UserP2()
        user.username
        user.phone
      }
    }

    class StudentP3 extends UserP2{
      def test(): Unit ={
        var user=new UserP2
        user.username
        user.email
        user.phone
      }
    }
  }
}