Chapter 2

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

Object

Back (Answer)

Something with which we can interact with the program

Front (Question)

Class

Back (Answer)

defines objects

Front (Question)

System.out is an

Back (Answer)

object

Front (Question)

print is different than println because

Back (Answer)

it does not advance to the next line

Front (Question)

Objects are abstract because

Back (Answer)

we don’t have to think about it’s internal details

Front (Question)

Encapsulation

Back (Answer)

Each object handles its own state

Front (Question)

getter

Back (Answer)

used to ask an object the value of a variable

Front (Question)

setter

Back (Answer)

allows you to ask an object to change the value

Front (Question)

String is an object

Back (Answer)

yes

#10

Front (Question)

concatenation

Back (Answer)

when you use the + operator to connect a very long string

#11

Front (Question)

An escape sequence

Back (Answer)

begins with back slash, tell program to treat next letter specially

#12

Front (Question)

tab

Back (Answer)

#13

Front (Question)

newline

Back (Answer)

#14

Front (Question)

double quote

Back (Answer)

#15

Front (Question)

three steps to make a variable

Back (Answer)

instantiate: declare initialize: store use

#16

Front (Question)

assignment

Back (Answer)

stores a value into a variable

#17

Front (Question)

declaring multiple variable at once is

Back (Answer)

bad form

#18

Front (Question)

constant

Back (Answer)

final

#19

Front (Question)

type

Back (Answer)

a category or set of data values

#20

Front (Question)

3 primitive types

Back (Answer)

int double boolean

#21

Front (Question)

widening conversions

Back (Answer)

safe, do not lose information (int to double)

#22

Front (Question)

narrowing conversions

Back (Answer)

often lost information (double to in)

#23

Front (Question)

casting

Back (Answer)

we want a floating point result when dividing them, we cast a total result = (double) total / count;

#24

Front (Question)

pointer

Back (Answer)

a reference in the address, points to where the object is