Java Chapter 3

Front 1

Each class declaration that begins with keyword ___ must be stored in a file that has exactly the same name as the class and ends with the .java filename extension.

Back 1

public

Front 2

Keyword ___ in a class declaration is followed immediately by the class’s name.

Back 2

class

Front 3

Keyword ___ requests memory from the system to store an object, then calls the corresponding class’s constructor to initialize the object.

Back 3

new

Front 4

Each [method] parameter must specify both a ___ and a ___.

Back 4

type, name

Front 5

By default, classes that are compiled in the same directory are considered to be in the same package, known as the ___ package.

Back 5

default

Front 6

Java provides two primitive types for storing floating-point numbers in memory: ___ and ___.

Back 6

float, double

Front 7

Variables of type double represent ___ floating-point numbers.

Back 7

double precision

Front 8

A class constructor is named the same as the class. (T/F)

Back 8

T

Front 9

Keyword public is an access ___.

Back 9

modifier

Front 10

Return type ___ indicates that a method will not return a value.

Back 10

void

Front 11

ProjectUI provides a simple way to prompt the user for input and to get a value entered by the user at runtime. (T/F)

Back 11

T

Front 12

Class String is in package ___.

Back 12

java.lang

Front 13

An ___ declaration is not required if you always refer to a class with its fully qualified class name.

Back 13

import

Front 14

A ___ number is a number with a decimal point, such as 7.33, 0.0975, 1000.12345.

Back 14

floating-point

Front 15

Variables of type float represent ___-precision floating-point numbers.

Back 15

single

Front 16

The format specifier ___ is used to output values of type float or double.

Back 16

f

Front 17

Types in Java are divided into two categories - ___ types and ___ types.

Back 17

primitive, reference

Front 18

By convention, method names begin with an uppercase first letter, and all subsequent words in the name begin with a capital first letter. (T/F)

Back 18

F

Front 19

An import declaration is not required when one class in a package uses another in the same package. (T/F)

Back 19

T

Front 20

Empty parentheses following a method name in a method declaration indicate that the method does not require any parameters to perform its task. (T/F)

Back 20

T

Front 21

A primitive-type variable can be used to invoke a method. (T/F)

Back 21

F

Front 22

Variables declared in the body of a particular method are known as instance variables and can be used in all methods of the class. (T/F)

Back 22

F

Front 23

Every method’s body is delimited by left and right braces ({ and }). (T/F)

Back 23

T

Front 24

Primitive-type local variables are initialized by default. (T/F)

Back 24

F

Front 25

Reference-type instance variables are initialized by default to the value null. (T/F)

Back 25

T

Front 26

Any class that contains the method public static void main(String[] args) can be used to execute an app. (T/F)

Back 26

T

Front 27

The number of arguments in the method call must match the number of parameters in the method declaration’s parameter list. (T/F)

Back 27

T

Front 28

Floating-point values that appear in source code are known as floating-point literals and are type float by default. (T/F)

Back 28

F

Front 29

A local variable is only known within its ___ ___.

Back 29

defining context

Front 30

An instance variable is known throughout the entire ___.

Back 30

class

Front 31

Parameters are indicated when you define a ___.

Back 31

method

Front 32

Parameters tell what is actually needed to ____ a method.

Back 32

perform

Front 33

Arguments are specified when ___ a method.

Back 33

calling

Front 34

Arguments are actual ___ sent to a method to fulfill its ___.

Back 34

values, parameters

Front 35

All variable names should start with a ___ letter.

Back 35

lowercase

Front 36

All method names should start with a ___ letter.

Back 36

lowercase

Front 37

All class names should start with a ___ letter.

Back 37

uppercase

Front 38

Naming conventions: After the first character, ___ ___ is used.

Back 38

camel case

Front 39

Local variables are not known outside their ___.

Back 39

context

Front 40

Local variables are declared within a ___.

Back 40

method

Front 41

Local variables can only be accessed within their ___.

Back 41

method

Front 42

The keyword new is used to reserve ___ in ___.

Back 42

space, memory

Front 43

The keyword new allows an object to be referred to by ___.

Back 43

name

Front 44

The keyword new creates an ___ of a ___.

Back 44

instance, class

Front 45

Once keyword new has been used to create an instance of a class, it is stored and available for use ___.

Back 45

later