The basic generic functional interface ________ in package java.util.function contains method test that takes a T argument and returns a boolean. Tests whether the T argument satisfies a condition.

		Consumer
		Function
		Supplier
		Predicate

1 points

QUESTION 14

Stream method ________ maps objects to double values and returns a DoubleStream. The method receives an object that implements the functional interface ToDoubleFunction (package java.util.function).

		doubleMap
		toDouble
		mapToDouble
		toDoubleStream

1 points

QUESTION 15

Collectors static method groupingBy with one argument receives a Function that classifies objects in the streamthe values returned by this function are used as the keys in a Map. The corresponding values, by default, are ________ containing the stream elements in a given category.

		Lists
		Arrays
		Strings
		Collectors

1 points

QUESTION 16

Functional interface BiConsumers accept method has two parameters. For Maps, the first represents the ________ and the second the corresponding ________.

		key, variable
		lambda, value
		lambda, variable
		key, value

1 points

QUESTION 17

Class Arrays ________ method is used to create a Stream from an array of objects.

		stream
		arrayToStream
		createStream
		objectToStream

1 points

QUESTION 18

An ________ (package java.util.stream) is a specialized stream for manipulating int values.

		StreamOfInt
		IStream.
		IntegerStream
		IntStream

1 points

QUESTION 19

The basic generic functional interface ________ in package java.util.function contains method get that takes no arguments and produces a value of type T. Often used to create a collection object in which a stream operations results are placed.

		Consumer
		Function
		Supplier
		BinaryOperator

1 points

QUESTION 20

The basic generic functional interface ________ in package java.util.function contains method accept that takes a T argument and returns void. Performs a task with its T argument, such as outputting the object, invoking a method of the object, etc.

		Consumer
		Function
		Supplier
		BinaryOperator

1 points

QUESTION 21

The basic generic functional interface ________ in package java.util.function contains method apply that takes two T arguments, performs an operation on them (such as a calculation) and returns a value of type T.

		Consumer
		Function
		Supplier
		BinaryOperator

1 points

QUESTION 22

By default, method sorted uses ________.

		ascending order
		the natural order for the stream's element type
		descending order
		the order specified in a command-line argument

1 points

QUESTION 23

Map method entrySet returns a Set of Map.Entry objects containing the Maps ________.

		values
		keys
		index
		keyvalue pairs

1 points