Oracle 1Z0-819 Online Practice Questions and Exam Preparation

Oracle 1Z0-819 Online Questions & Answers

• Question 61:

  Given:

  

  To secure this code, you want to make sure that the client code cannot modify the public static fields. Which code will accomplish this?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 62:

  Given:

  

  Which is true?

  A. Line 2 is the first line to cause a compilation error.
  B. Line 3 is the first line to cause a compilation error.
  C. It compiles without errors.
  D. Line 1 is the first line to cause a compilation error.
  C. It compiles without errors.

• Question 63:

  Given:

  

  What is the result?

  A. The compilation fails.
  B. abdf
  C. abd
  D. adf
  E. abcd
  E. abcd

• Question 64:

  Given:

  

  and

  

  Why does this compilation fail?

  A. The method X.print (object) is not accessible to Y.
  B. The method Y.print (Object) does not call the method super.print (Object).
  C. In method X.print (Collection), System.out::println is an invalid Java identifier.
  D. The method Y.print (Object...) cannot override the final method X.print (Object...).
  E. The method print (Object) and the method print (Object...) are duplicates of each other.
  D. The method Y.print (Object...) cannot override the final method X.print (Object...).

• Question 65:

  Given:

  

  What is the output?

  A. I am an object array
  B. The compilation fails due to an error in line 1.
  C. I am an array
  D. I am an object
  D. I am an object

• Question 66:

  Given:

  

  Which three classes successfully override showFirst ()?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  F. Option F
  A. Option A
  B. Option B
  E. Option E

• Question 67:

  Given the code fragment:

  

  Which "for" loop produces the same output?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 68:

  Which code fragment compiles?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  D. Option D

• Question 69:

  Given:

  

  What is the result?

  A. Keys: 4 Values: 4 Map: 0
  B. Keys: 4 Values: 4 Map: 4
  C. The compilation fails.
  D. Keys: 0 Values: 0 Map:
  E. Keys: 0 Values: 0 Map: 0
  B. Keys: 4 Values: 4 Map: 4

• Question 70:

  Which two statements independently compile? (Choose two.)

  A. List
  B. List
  C. List
  D. List
  E. List
  A. List
  C. List