(WGU D286) ITWS 3172 Java Fundamentals Comprehensive OA 2024

D286 ITSW 3172


Java Fundamentals


Comprehensive Objective
Assessment


2024

,1. Multiple Choice: What is the output of the following Java code snippet?



```java

int x = 5;

int y = ++x;
System.out.println(y);

```



A) The code will not compile

B) 5
C) 6

D) 10



Correct Answer: C) 6

Rationale: The increment operator `++x` first increments the value of x by
1, and then assigns the result to y. Therefore, y will be 6.



2. Fill in the Blank: In Java, an abstract class cannot be _______ directly.



Correct Answer: instantiated

Rationale: Abstract classes are meant to be subclassed, and you cannot
create an instance of an abstract class.

, 3. True/False: The `equals()` method in Java compares the memory
addresses of two objects.



Correct Answer: False

Rationale: The `equals()` method in Java is used to compare the actual
contents of two objects, not their memory addresses.



4. Multiple Choice: Which keyword is used to implement multiple
inheritances in Java?



A) abstract

B) extends

C) implements

D) super



Correct Answer: C) implements

Rationale: In Java, a class can implement multiple interfaces to achieve
multiple inheritance.



5. Fill in the Blank: The `super` keyword in Java is used to access the
_______ of the superclass.



Correct Answer: members