Free Oracle 1Z0-819 Exam Questions (page: 4)

Given:



What is the result?

  1. 4
  2. 3
  3. An exception is thrown at runtime.
  4. 5

Answer(s): A

Explanation:



Given:



It is required that if p instanceof Pair then p.isValid() returns true.

Which is the smallest set of visibility changes to insure this requirement is met?

  1. setLeft and setRight must be protected.
  2. left and right must be private.
  3. isValid must be public.
  4. left, right, setLeft, and setRight must be private.

Answer(s): B



Given:



What is the result?

  1. 5
  2. 3
  3. 23
  4. 25
  5. 11

Answer(s): E



Given:



What is the result?

  1. 2,34,34,5
  2. 2,34,54,5
  3. 2,54,54,5
  4. 2,34,54,3

Answer(s): C

Explanation:






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