Web Services Development MCQs with Answers
Practice important Web Services Development MCQs with answers and explanations.
Multiple Choice Questions
Q121: What does a wrapper class in Java encapsulate?
- A: A single, mutable value
- B: A single, immutable value
- C: Multiple mutable values
- D: Multiple immutable values
View Answer
B
Q122: What class wraps an int value in Java?
- A: Integer
- B: IntWrapper
- C: IntClass
- D: Float
View Answer
A
Q123: What is the term for the automatic conversion between primitive types and their corresponding wrapper classes?
- A: Boxing
- B: Unboxing
- C: Autoboxing
- D: Casting
View Answer
C
Q124: Converting an Integer object to an int value is known as what?
- A: Autoboxing
- B: Boxing
- C: Wrapping
- D: Unboxing
View Answer
D
Q125: Which of the following operators assigns the result of addition in Java?
- A: =
- B: +=
- C: ++
- D: +
View Answer
B
Q126: Which operator is used for signed right bit shift in Java?
- A: <<=
- B: >>=
- C: >>>=
- D: ^=
View Answer
B
Q127: Which operator is used for incrementing a value by 1 in Java?
- A: ++
- B: +=
- C: --
- D: -=
View Answer
A
Q128: Where can an increment operator be placed relative to a variable in Java?
- A: Before only
- B: After only
- C: Before or after
- D: Neither
View Answer
C
Q129: What happens if the condition in a for loop is omitted?
- A: The loop runs once
- B: The loop never runs
- C: An error occurs
- D: An infinite loop is created
View Answer
D
Q130: In Java, what type of loop is generally used when the number of iterations is known beforehand?
- A: While loop
- B: For loop
- C: Do-while loop
- D: Infinite loop
View Answer
B