Oracle Oracle Certifications 1Z0-815 Questions & Answers

• Question 51:

  Given:

  

  executed with this command: java Main one two three What is the result?

  A. 0). one

  B. 0). one

  1). two

  2). three

  C. The compilation fails.

  D. It creates an infinite loop printing: 0). one 1). two 1). two ...

  E. A java.lang.NullPointerException is thrown.

  Correct Answer: D

• Question 52:

  Given:

  

  Assuming that this code compiles correctly, which three statements are true? (Choose three.)

  A. B cannot be abstract.

  B. B is a subtype of A.

  C. A cannot be abstract.

  D. A cannot be final.

  E. B cannot be final.

  F. A is a subtype of B.

  Correct Answer: ADF

• Question 53:

  Given: Which code, when inserted at one or more marked positions, would allow classes B and C to compile?

  

  A. @Override // position 3 void x () {} // position 3 @Override // position 3 public void z() { } // position 3 // position 2

  B. @Override public void z() { } // position 3

  C. implements A // position 1 @Override // position 2

  D. public void z() { } // position 3

  Correct Answer: B

• Question 54:

  Given:

  

  Which is true?

  A. The code compiles but does not print any result.

  B. The code prints 25.

  C. The code does not compile.

  D. The code throws an exception at runtime.

  Correct Answer: C

• Question 55:

  Given: What is the result?

  

  A. [0,0] = Red [0,1] = White [1,0] = Black [1,1] = Blue [2,0] = Yellow [2,1] = Green [3,0] = Violet

  B. [0,0] = Red [1,0] = Black [2,0] = Blue

  C. java.lang.ArrayIndexOutOfBoundsException thrown

  D. [0,0] = Red [0,1] = White [1,0] = Black [2,0] = Blue [2,1] = Yellow [2,2] = Green [2,3] = Violet

  Correct Answer: D

  

• Question 56:

  Given: What is the result?

  

  A. Working Unknown

  B. Unknown

  C. Tuesday Unknown

  D. The compilation fails.

  E. Tuesday

  F. Working

  Correct Answer: B

  

• Question 57:

  Given:

  

  What is the result?

  A. A ClassCastException is thrown at runtime.

  B. AnotherClass#methodA() AnotherClass#methodA()

  C. The compilation fails.

  D. SomeClass#methodA() AnotherClass#methodA()

  E. AnotherClass#methodA() SomeClass#methodA()

  F. SomeClass#methodA() SomeClass#methodA()

  Correct Answer: A

• Question 58:

  

  Which two statements are correct about try blocks? (Choose two.)

  A. A try block can have more than one catch block.

  B. A finally block in a try-with-resources statement executes before the resources declared are closed.

  C. A finally block must be immediately placed after the try or catch blocks.

  D. A try block must have a catch block and a finally block.

  E. catch blocks must be ordered from generic to specific exception types.

  Correct Answer: AE

  Reference: https://beginnersbook.com/2013/04/try-catch-in-java/

• Question 59:

  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

  Correct Answer: B

  

• Question 60:

  Given: What is the result?

  

  A. The compilation fails.

  B. 1.99,2.99,0

  C. 1.99,2.99,0.0

  D. 1.99,2.99

  Correct Answer: A