Java 8 Mock Test
This section presents you various set of Mock Tests related to Java 8 . You can download these sample mock tests at your local machine and solve offline at your convenience. Every mock test is supplied with a mock test key to let you verify the final score and grade yourself.
Java 8 Mock Test I
Answer : D
Explanation
All of the above options are correct.
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Answer : D
Explanation
All of the above options are correct.
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Answer : C
Explanation
Both of the above options are correct.
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Answer : C
Explanation
Both of the above options are correct.
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Answer : C
Explanation
Both of the above options are correct.
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Answer : C
Explanation
Both of the above options are correct.
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Answer : C
Explanation
Both of the above options are correct.
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Answer : A
Explanation
System.out::println method is a static method reference to println method of out object of System class.
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Answer : A
Explanation
BiConsumer<T,U> functional interface represents an operation that accepts two input arguments, and returns no result.
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Answer : B
Explanation
BiFunction<T,U> functional interface represents an operation that accepts two input arguments, and returns a result.
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Answer : C
Explanation
BinaryOperator<T> functional interface represents an operation upon two operands of the same type, producing a result of the same type as the operands.
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Answer : D
Explanation
BiPredicate<T,U> functional interface represents a predicate (Boolean-valued function) of two arguments.
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Answer : A
Explanation
BooleanSupplier functional interface represents a supplier of Boolean-valued results.
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Answer : B
Explanation
Consumer<T> functional interface represents an operation that accepts a single input argument and returns no result.
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Answer : C
Explanation
DoubleBinaryOperator functional interface represents an operation upon two double-valued operands and producing a double-valued result.
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Answer : D
Explanation
DoubleConsumer functional interface represents an operation that accepts a single double-valued argument and returns no result.
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Answer : A
Explanation
DoubleFunction<R> functional interface represents a function that accepts a double-valued argument and produces a result.
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Answer : B
Explanation
DoublePredicate functional interface represents a predicate (Boolean-valued function) of one double-valued argument.
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Answer : C
Explanation
DoubleSupplier functional interface represents a supplier of double-valued results.
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Answer : D
Explanation
DoubleToIntFunction functional interface represents a function that accepts a double-valued argument and produces an int-valued result.
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Answer : A
Explanation
DoubleToLongFunction functional interface represents a function that accepts a double-valued argument and produces a long-valued result.
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Answer : B
Explanation
DoubleUnaryOperator functional interface represents an operation on a single double-valued operand that produces a double-valued result.
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Answer : C
Explanation
Function<T,R> functional interface represents a function that accepts one argument and produces a result.
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Answer : D
Explanation
FunctionIntBinaryOperator functional interface represents an operation upon two int-valued operands and produces an int-valued result.
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Answer : A
Explanation
IntConsumer functional interface represents an operation that accepts a single int-valued argument and returns no result.
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Answer Sheet
Question Number
Answer Key
1
D
2
D
3
C
4
C
5
C
6
C
7
C
8
A
9
A
10
B
11
C
12
D
13
A
14
B
15
C
16
D
17
A
18
B
19
C
20
D
21
A
22
B
23
C
24
D
25
A
java8_questions_answers.htm
