Oracle Oracle Certifications 1Z0-815 Questions & Answers

• Question 11:

  Given:

  

  What is the result?

  A. null

  B. Joe Bloggs

  C. The compilation fails due to an error in line 1.

  D. p1

  Correct Answer: C

  

• Question 12:

  Given:

  

  Which two methods facilitate valid ways to read instance fields? (Choose two.)

  A. getTCount

  B. getACount

  C. getTotalCount

  D. getCCount

  E. getGCount

  Correct Answer: CD

• Question 13:

  Given: If file "App.config" is not found, what is the result?

  

  A. Configuration is OK

  B. The compilation fails.

  C. Exception in thread "main" java.lang.Error: Fatal Error: Configuration File, App.config, is missing.

  D. nothing

  Correct Answer: B

  

• Question 14:

  Given:

  

  Which statement is true about the Fox class?

  A. Fox class does not have to override inhabit method, so long as it does not try to call it.

  B. Fox class does not have to override the inhabit method if Forest and Town provide compatible implementations.

  C. Fox class must implement either Forest or Town interfaces, but not both.

  D. The inhabit method implementation from the first interface that Fox implements will take precedence.

  E. Fox class must provide implementation for the inhabit method.

  Correct Answer: B

• Question 15:

  Given:

  

  executed with this command:

  java Main one two three

  What is the output of this class?

  A. The compilation fails.

  B. 1) one 2) two 3) three

  C. A java.lang.ArrayIndexOutOfBoundsException is thrown.

  D. 1) one

  E. nothing

  Correct Answer: B

• Question 16:

  Which three initialization statements are correct? (Choose three.)

  A. int x = 12_34;

  B. short sh = (short)`A';

  C. String contact# = "(+2) (999) (232)";

  D. boolean true = (4 == 4);

  E. float x = 1.99;

  F. int[][] e = {{1,1},{2,2}};

  G. byte b = 10; char c = b;

  Correct Answer: AEF

• Question 17:

  Given:

  

  What must be added in line 1 to compile this class?

  A. catch(IOException e) { }

  B. catch(FileNotFoundException | IndexOutOfBoundsException e) { }

  C. catch(FileNotFoundException | IOException e) { }

  D. catch(IndexOutOfBoundsException e) { } catch(FileNotFoundException e) { }

  E. catch(FileNotFoundException e) { } catch(IndexOutOfBoundsException e) { }

  Correct Answer: C

• Question 18:

  Given the code fragment: What is the result?

  

  A. 23

  B. 12

  C. 123

  D. 13

  Correct Answer: A

  

• Question 19:

  Given: Which two lines can replace line 1 so that the Y class compiles? (Choose two.)

  

  A. map.forEach((k, v) -> set(v)));

  B. set(map.values());

  C. super.set(List map)

  D. super.set(map.values());

  E. set(map)

  Correct Answer: BD

• Question 20:

  Given:

  

  Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

  A. protected void walk(){}

  B. void walk(){}

  C. abstract void walk();

  D. private void walk(){}

  E. public abstract void walk();

  Correct Answer: AB