accesses2.scala:6: error: overriding method f2 in class A of type ()Int;
 method f2 has weaker access privileges; it should not be private
    private def f2(): Int = 1
                ^
accesses2.scala:5: error: class B1 needs to be abstract, since method f2 in class A of type ()Int is not defined
  class B1 extends A {
        ^
accesses2.scala:9: error: overriding method f2 in class A of type ()Int;
 method f2 has weaker access privileges; it should not be private
    private def f2(): Int = 1
                ^
three errors found