Java Tutorial
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Advanced Java
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Java Miscellaneous
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- Java 8 - New Features
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Java APIs & Frameworks
Java Useful Resources
Java 8 Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Java 8. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Which of the following is correct about Java8?
A - New compiler tools and utilities are added like 'jdeps' to figure out dependencies.
B - New stream API to facilitate pipeline processing is added.
Answer : D
Explanation
All of the above options are correct.
Q 2 - Which of the following functional interface represents a function that accepts a double-valued argument and produces a result?
Answer : A
Explanation
DoubleFunction<R> functional interface represents a function that accepts a double-valued argument and produces a result.
Q 3 - Which of the following functional interface represents an operation that accepts a single int-valued argument and returns no result?
Answer : A
Explanation
IntConsumer functional interface represents an operation that accepts a single int-valued argument and returns no result.
Q 4 - Which of the following functional interface represents an operation upon two long-valued operands and produces a long-valued result?
Answer : D
Explanation
LongBinaryOperator functional interface represents an operation upon two long-valued operands and produces a long-valued result.
Q 5 - Which of the following functional interface represents an operation that accepts an object-valued and a long-valued argument, and returns no result?
Answer : B
Explanation
ObjLongConsumer<T> functional interface represents an operation that accepts an object-valued and a long-valued argument, and returns no result.
Q 6 - How will you call a static method of an interface in a class?
A - Using super keyword along with interface name.
Answer : B
Explanation
Using name of the interface.
Answer : A
Explanation
Yes! Using ScriptEngineManager, JavaScript code can be called and interpreted in Java.
Q 8 - Lambda expressions are used primarily to define inline implementation of a functional interface.
Answer : A
Explanation
Lambda expressions are used primarily to define inline implementation of a functional interface.
Q 9 - A stream provides a set of elements of specific type in a sequential manner.
Answer : A
Explanation
A stream provides a set of elements of specific type in a sequential manner. A stream gets/computes elements on demand. It never stores the elements.
Q 10 - Optional.of method throws NullPointerException if passed parameter is null.
Answer : A
Explanation
Optional.of method throws NullPointerException if passed parameter is null.
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