Oracle Oracle Certifications 1Z0-808 Questions & Answers

• Question 51:

  Given the definitions of the Bird class and the Peacock class:

  

  and the code fragment:

  

  Which code snippet can be inserted to print Fly.Dance. ?

  A. Bird p = new Peacock();

  B. Bird b = new Bird(); Peacock p = (Peacock) b;

  C. Peacock b = new Peacock (); Bird p = (Bird) b;

  D. Bird b = new Peacock (); Peacock p = (Peacock) b;

  Correct Answer: D

• Question 52:

  Given the code fragment:

  

  Which action enables it to print AB?

  A. Comment lines 18 to 21.

  B. Comment line 20.

  C. Comment line 19.

  D. Comment line 16.

  Correct Answer: C

• Question 53:

  Given the code fragments:

  

  And:

  

  Which statement is true?

  A. After line 11, three objects are eligible for garbage collection.

  B. After line 11, two objects are eligible for garbage collection.

  C. After line 11, one object is eligible for garbage collection.

  D. After line 11, none of the objects are eligible for garbage collection.

  Correct Answer: B

  B is correct.

  After line 11 -> 2 objects are eligible for GC.

  After line 12 -> 3 objects are eligible for GC.

• Question 54:

  Given the code fragment:

  

  What is the result?

  A. 2012-02-10

  B. 2012-01-30

  C. 2012-02-10 00:00

  D. A DateTimeException is thrown at runtime.

  Correct Answer: D

• Question 55:

  Given the code fragment:

  

  What is the result?

  A. Sum is 600

  B. Compilation fails at line n1.

  C. Compilation fails at line n2.

  D. A ClassCastException is thrown at line n1.

  E. A ClassCastException is thrown at line n2.

  Correct Answer: C

• Question 56:

  Given: What is the result?

  

  A. Compilation fails.

  B. false true

  C. true false

  D. true true

  E. false false

  Correct Answer: C

  

• Question 57:

  Given the definitions of the MyString class and the Test class:

  

  What is the result?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: D

• Question 58:

  Given: What is the result?

  

  A. Base DerivedA

  B. Base DerivedB

  C. DerivedB DerivedB

  D. DerivedB DerivedA

  E. A ClassCastException is thrown at runtime.

  Correct Answer: C

• Question 59:

  Given the code fragment:

  

  What is the result?

  A. Answer = 0

  B. Invalid calculation

  C. Compilation fails only at line n1.

  D. Compilation fails only at line n2.

  E. Compilation fails at line n1 and line2.

  Correct Answer: E

• Question 60:

  Given the code fragment:

  

  Which option represents the state of the num array after successful completion of the outer loop?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B