Unit 2 Vocabulary

Question 1

Any text that is enclosed in double quotes

Answer 1

String literal

Question 2

A data type that uses a small amount of memory to represent a single item of data

Answer 2

Primitive

Question 3

A data type that stores a whole number, positive or negative, or zero

Answer 3

int

Question 4

A data type that stores a positive or negative number including floating-point values

Answer 4

double

Question 5

A data type that stores either true or false

Answer 5

boolean

Question 6

Java keyword used to indicate that the value of the variable cannot be changed once it is initialized

Answer 6

final

Question 7

A special kind of integer division that returns the remainder instead of the quotient

Answer 7

Modulus division

Question 8

Represented by the = symbol, takes the result of the expression on the right and assigns it to the variable on the left

Answer 8

Assignment operator

Question 9

Occurs when an expression evaluates to an int value outside of the allowed range

Answer 9

Integer overflow error

Question 10

The formal implementation, or blueprint, of the attributes and behaviors of an object that the objects of its type support

Answer 10

Class

Question 11

A specific instance of a class with defined attributes

Answer 11

Object

Question 12

The data of an object that will constitute the state of an object

Answer 12

Attribute

Question 13

Defines the behavior of an object that is performed on an object’s data

Answer 13

Method

Question 14

The act of creating an object of a class for use in a program

Answer 14

Instantiation

Question 15

A specific realization of an object

Answer 15

Instance

Question 16

Java reserved word that is used to create an object

Answer 16

new

Question 17

A value that is passed into a constructor or other method to provide the data for the object’s initial state

Answer 17

Parameter

Question 18

A special method of a class that initializes an object of that type

Answer 18

Constructor

Question 19

Name of a method including the order and type of parameters

Answer 19

Signature

Question 20

Parameter listed in the header of a method

Answer 20

Formal parameter

Question 21

The value passed into a method

Answer 21

Actual parameter

Question 22

An address that indicates where an object’s variables and methods are stored

Answer 22

Object reference

Question 23

A special value used to indicate that a reference is not associated with any object

Answer 23

null

Question 24

Allows a programmer to use a method by knowing what the method does even if they do not know how the method was written

Answer 24

Procedural abstraction

Question 25

Methods that execute code but do not return a value and are not called as part of an expression

Answer 25

Void method

Question 26

Methods that execute code and then return a single value to the calling program and are part of an expression

Answer 26

Non-void method

Question 27

Also called class methods. Invoked by either just using the method name or using the class identifier, the dot notation, and then the method name.

Answer 27

Non-static method

Question 28

Used to represent primitive data types as objects

Answer 28

Wrapper classes

Question 29

The automatic conversion the Java compiler makes between primitive types and their corresponding wrapper classes, int to Integer, double to Double

Answer 29

Autoboxing

Question 30

The automatic conversion the Java compiler makes from the wrapper class to the primitive type, Integer to int, Double to double

Answer 30

Unboxing

Question 31

An expression that evaluates to either true or false

Answer 31

Boolean expression

Question 32

A logical operator in which both conditions must be true for the resulting expression to evaluate to true

Answer 32

AND

Question 33

A logical operator in which if one condition is true, then the resulting expression evaluates to true

Answer 33

OR

Question 34

A logical operator that evaluates to the opposite of the expression

Answer 34

NOT

Question 35

Occurs when Java will not evaluate the second term if the first term is sufficient to determine the truth value of the entire expression

Answer 35

Short-circuited evaluation

Question 36

A law that says: NOT(A AND B) is equivalent to NOT A OR NOT B and NOT(A OR B) is equivalent to NOT A AND NOT B

Answer 36

DeMorgan’s Law

Question 37

Interrupt the sequential execution of statements

Answer 37

Conditional/Selection statements

Question 38

Use Boolean logic to decide whether to execute other programming statements. The Boolean expression must be evaluated to be true for the statement to execute.

Answer 38

If statements-one-way-selection

Question 39

Allow the programmer to create a two-way decision tree based on the evaluation of a conditional statement

Answer 39

If-else two-way selection

Question 40

Allows the programmer to set up a chain of conditionals that only produce one result

Answer 40

If-else-if multi-way selection

Question 41

Used to create multi-way selection statements

Answer 41

Nested if statements

Question 42

Two object references that both reference the same object

Answer 42

Aliases