no-predef.scala:2: error: type mismatch;
 found   : Long (in scala)
 required: Long (in java.lang)
  def f1 = 5L: java.lang.Long
           ^
no-predef.scala:3: error: type mismatch;
 found   : Long (in java.lang)
 required: Long (in scala)
  def f2 = new java.lang.Long(5) : Long
           ^
no-predef.scala:4: error: value map is not a member of String
  def f3 = "abc" map (_ + 1)
                 ^
three errors found