Oracle 1Z0-809 Exam Real Questions

Prepare and pass your Java SE 8 Programmer II with free 1Z0-809 exam questions.

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Total 469 Questions | Updated On: Oct 08, 2024

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Question 1

Which of the following code will create/return a Locale object for the JVM, on which your code is running?

A : System.getDefault();

B : Locale.getDefault();

C : Locale.getLocale();

D : Locale.getDefaultLocale();

Answer: B

Question 2

Given:

public class Counter {

public static void main (String[ ] args) {

int a = 10;

int b = -1;

assert (b >=1) : “Invalid Denominator”;

int с = a / b;

System.out.println (c);

}

What is the result of running the code with the –da option?

A : -10

B : 0

C : AssertionError is thrown.

D : compilation error occurs.

Answer: A

Question 3

Given:

and the code fragment:

What is the result?

A : A compilation error occurs at line n2.

B : A compilation error occurs because the try block doesn’t have a catch or finally block.

C : A compilation error occurs at line n1.

D : The program compiles successfully.

Answer: B

Question 4

Given the code fragment:

What is the result?

A : compilation error occurs at line n2.

B : 3

C : 2

D : compilation error occurs at line n1.

Answer: A

Question 5

You want to create a singleton class by using the Singleton design pattern. Which two statements enforce the singleton nature of the design? (Choose two.)

A : ke the class static.

B : ke the constructor private.

C : erride equals() and hashCode() methods of the java.lang.Object class

D : a public reference to point to the single instance

E : Implement the Serializable interface

F : ke the single instance created static and final.

Answer: A,B

Page: 1 / 94

Total 469 Questions | Updated On: Oct 08, 2024

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