单选题package foo；   import java.util.Vector；   private class MyVector extends Vector {  int i = 1；   public MyVector（） {   i = 2；  }   }   public class MyNewVector extends MyVector {   public MyNewVector （） {   i = 4；   }   public static void main （String a

package foo；   import java.util.Vector；   private class MyVector extends Vector {  int i = 1；   public MyVector（） {   i = 2；  }   }   public class MyNewVector extends MyVector {   public MyNewVector （） {   i = 4；   }   public static void main （String args ） {    MyVector v = new MyNewVector（）；   }   }   The file MyNewVector.java is shown in the exhibit.  What is the result？（）