Chapter 2 - Fundamental Data Types

Question 0

A number that cannot have a fractional part.

Answer 0

Integer

Question 1

A symbol in a program that identifies a storage location that can hold different values.

Answer 1

Variable

Question 2

A number that can have a fractional part.

Answer 2

Floating-point number

Question 3

A constant value in a program that is explicitly written as a number, such as -2 or 6.02214115E23

Answer 3

Number literal

Question 4

A word that has a special meaning in a programming language and therefore cannot be used as a name by the programmer.

Answer 4

Reserved word

Question 5

To store a new value in a variable, replacing the previously stored value.

Answer 5

Assignment statement

Question 6

Placing a new value into a variable.

Answer 6

Assignment

Question 7

A value that cannot be changed by a program. In Java, constants are defined with the reserved word final.

Answer 7

Constant

Question 8

An explanation to help the human reader understand a section of a program; ignored by the compiler.

Answer 8

Comment

Question 9

A syntactical construct that is made up of constants, variables, method calls, and the operators combining them.

Answer 9

Expression

Question 10

The % operator that computes the remainder of an integer division.

Answer 10

Modulus

Question 11

Explicitly converting a value from one type to a different type. For example, the cast from a floating-point number x to an integer is expressed in Java by the cast notation (int) x.

Answer 11

Casts

Question 12

A string that tells the user to provide input.

Answer 12

Prompt

Question 13

A collection of related classes. The import statement is used to access one or more classes in a package.

Answer 13

Package

Question 14

Information about each class in the Java library.

Answer 14

API documentation

Question 15

A code library for building programs.

Answer 15

Application Programming Interface (API)

Question 16

… letters, numbers, punctuation, spaces, and so on.

Answer 16

Characters

Question 17

The word is a sequence of characters.

Answer 17

String

Question 18

character sequences enclosed in quotes, such as “Harry”.

Answer 18

Literals

Question 19

Placing one string after another to form a new string.

Answer 19

Concatenation

Question 20

A character in text that is not taken literally but has a special meaning when combined with the character or characters that follow it. The \ character is an escape character in Java strings.

Answer 20

Escape character

Question 21

A value of a class type.

Answer 21

Object

Question 22

In Java, a number type, characters or boolean

Answer 22

Primitive type

Question 23

A standard code that assigns code values consisting of two bytes to characters used in scripts around the world. Java stores all characters as their Unicode values.

Answer 23

Unicode