Streams

Question 1

Given method: map

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 1

Intermediate
N
Function< ?super T>,​< ? extends R>

Question 2

Given method: filter

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 2

Intermediate
N
Predicate < ? super T>

Question 3

Given method: flatMap

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 3

Intermediate
N
Function super T, ​? extends Stream extends R»

Question 4

Given method: peek

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 4

Intermediate
N
Consumer super T>

Question 5

Given method: distinct

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 5

Intermediate
N
none

Question 6

Given method: sorted

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 6

Intermediate
N
none

Question 7

Given method: dropWhile

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 7

Intermediate
N
Predicate super T>

Question 8

Given method: skip

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 8

Intermediate
N
long

Question 9

Given method: limit

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 9

Intermediate
Y
long

Question 10

Given method: takeWhile

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 10

Intermediate
Y
Predicate super T>

Question 11

Given method: forEach

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 11

Terminal
N
Consumer super T>

Question 12

Given method: forEachOrdered

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 12

Terminal
N
Consumer super T>

Question 13

Given method: count

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 13

Terminal
N
long count()

Question 14

Given method: min

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 14

Terminal
N
Comparator< ?super T>

Question 15

Given method: max

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 15

Terminal
N
Optional< T> max (Comparator< ?super T>)

Question 16

Given IntStream method: sum

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 16

Terminal
N
int sum()

Question 17

Given method: average

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 17

Terminal
N
none

Question 18

Given method: collect

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 18

Terminal
N
Supplier, BiConsumer, BiConsumer

Question 19

Given method: reduce

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 19

Terminal
N
Optional< T> reduce(BinaryOperator< T> accumulator)

Question 20

Given method: allMatch

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 20

Terminal
Y
boolean allMatch (Predicate< ?super T>

Question 21

Given method: anyMatch

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 21

Terminal
Y
Predicate< ?super T>

Question 22

Given method: noneMatch

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 22

Terminal
Y
Predicate< ?super T>

Question 23

Given method: findAny

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 23

Terminal
Y
none

Question 24

Given method: findFirst

Intermediate/Terminal
Short-circuit: Y/N
Parameter list?

Answer 24

Terminal
Y
none

Question 25

interface Predicate

What is the abstract method to implement?

Answer 25

boolean test(T t)

Question 26

Interface Predicate

What are the default methods?

Answer 26

Predicate and(Predicate)

Predicate negate()

Predicate or(Predicate)

Question 27

Interface Predicate

What are the static methods?

Answer 27

Predicate isEqual(Object targetRef)

Predicate not (Predicate< ?super T>)

Question 28

Interface Function

What is the abstract method to implement?

Answer 28

R apply​(T t)

Question 29

Interface Function

What are the default methods?

Answer 29

Function andThen​(Function super R,​? extends V> after)

Function compose​(Function super V,​? extends T> before)

Question 30

Interface Function

What are the static methods?

Answer 30

Function identity()

Question 31

Interface UnaryOperator

Which functional interface does this extend from?

Answer 31

Interface Function

Question 32

Interface UnaryOperator

What are the static methods?

Answer 32

UnaryOperator identity()

Question 33

Interfaces Consumer

What is the abstract method to implement?

Answer 33

accept (T t)

Question 34

Interfaces Consumer

What are the default methods?

Answer 34

Consumer andThen (Consumer< ?superT> t)

Question 35

Interface Supplier

What is the abstract method to implement?

Answer 35

T get()