Operators

Question 1

+, -, *, /, %

Answer 1

mathematical operators

Question 2

• is also used to

Answer 2

pass an array to a vararg parameter

Question 3

= - __________ operator and is used to specify _________ values for ___________.

Answer 3

assignment operator and is used to specify default values for parameters

Question 4

+=, -=, *=, /=, %=

____________ _________ operators

Answer 4

augmented assignment operators

Question 5

++, –

__________ and _________ operators

Answer 5

increment and decrement operators

Question 6

&&, ||, !

____________ operators

Answer 6

logical ‘and’, ‘or’, ‘not’ operators

Question 7

==, !=

_________ operatos

Translated to calls of __________ () for non-primitive types.

Answer 7

equality operators (translated to calls of equals() for non-primitive types)

Question 8

===, !==

__________. __________ operators.

Answer 8

referential equality operators

Question 9

less/greater than and less/greater or equal to

__________ operators
Translated to calls of __________ () for non-primitive types.

Answer 9

comparison operators (translated to calls of compareTo() for non-primitive types)

Question 10

[, ]

________ ________ operators
Translated to calls of _________ and ___________.

Answer 10

indexed access operator (translated to calls of get and set)

Question 11

!! asserts that an ___________ is ____________ .

Answer 11

… an expression is non-null

Question 12

?. Performs a _______ _______

Answer 12

performs a safe call

calls a method or accesses a property if the receiver is non-null

Question 13

?:. The __________ operator

_______ the right hand value if the left hand value is ________

Answer 13

takes the right-hand value if the left-hand value is null

the elvis operator

Question 14

::creates a _______ or a _________ reference.

Answer 14

creates a member reference or a class reference

Question 15

.. creates a _________

Answer 15

creates a range

Question 16

: separates a _____ from a ______ in ____________.

Answer 16

separates a name from a type in declarations

Question 17

? marks a _______ as __________.

Answer 17

marks a type as nullable

Question 18

-> (3)
Separates the _____ and ____ of a lambda _______.

Separates the _____ and _____ _______ _______ in a function type.

Answer 18

separates the parameters and body of a lambda expression

separates the parameters and return type declaration in a function type

separates the condition and body of a when expression branch

Question 19

@

introduces an ________________

introduces or references a

1) __________ label
2) ___________ label

references a

1) ______ expression from an _______ scope
2) an __________ superclass

Answer 19

introduces an annotation

introduces or references a loop label

introduces or references a lambda label

references a ‘this’ expression from an outer scope

references an outer superclass

Question 20

;. Separates _______ statements on the ________ line.

Answer 20

separates multiple statements on the same line

Question 21

$

References a __________ or ________ in a _______. ________

Answer 21

references a variable or expression in a string template

Question 22

_ (2)

Substitutes an _________ parameter in a __________ expression and in a _________ declaration

Answer 22

substitutes an unused parameter in a lambda expression

substitutes an unused parameter in a destructuring declaration