APCS A Ch. 3 Vocabulary after scavenger hunt

Question 1

The data type or class type of a method that returns a value

Accepted Answer

return value

Question 2

Methods that can be called without instantiating an object

Accepted Answer

Static methods

Question 3

Writing computer programs that use classes and objects

Accepted Answer

OOP (Object Oriented Programming)

Question 4

2,000 predefined classes that you can use to add functionality to your program

Accepted Answer

Java Class Libraries

Question 5

The Scanner object divides its input into sequences called __________

Accepted Answer

tokens

Question 6

Methods that can be called without instantiating an object

Accepted Answer

static methods

Question 7

Converts all the letters in a String to either upper or lower case letters

Accepted Answer

toUpperCase and toLowerCase methods

Question 8

Part of the java.lang package and provides two static constants ( E and PI ) & static methods

Accepted Answer

Math class

Question 9

Any primitive data type or they can be objects of other classes

Accepted Answer

instance variables

Question 10

Releases memory allocated to objects that no longer have an object reference pointing to them

Accepted Answer

garbage collector

Question 11

This keyword means that any client of the class can call this method

Accepted Answer

public

Question 12

Useful to searching a String to see if specific Strings or characters are in the String

Accepted Answer

indexOf methods

Question 13

Are useful for extracting either a single char or a group of characters from a String

Accepted Answer

charAt and substring methods

Question 14

Argument list is empty—it assigns default values to all data in the object

Accepted Answer

default constructor

Question 15

Wraps the value of a primitive type into an objectPart of the java.lang package

Accepted Answer

Wrapper class

Question 16

Enables a client to change the value of the instance variable

Accepted Answer

mutator method

Question 17

Part of the java.util class and provides methods for reading instance variables-gets user input

Accepted Answer

Scanner class

Question 18

Located in the java.util package, uses a mathematical formula to generate a sequence of numbers

Accepted Answer

Random calss

Question 19

Returns the number of characters in a String

Accepted Answer

length method

Question 20

Creates dialog boxes for input and outputPart of the java.swing package / are designed for GUIs

Accepted Answer

JOptionPane

Question 21

A method that returns a value

Accepted Answer

value-returning method

Question 22

Converting input Strings to numbersUsed for JOptionPanes because they only return Strings

Accepted Answer

parsing

Question 23

The program that uses a class is the ________ of that class

Accepted Answer

client

Question 24

Fields and methods of a class

Accepted Answer

members

Question 25

The object reference is followed immediately by a dot which is then followed by the method name

Accepted Answer

dot notation

Question 26

Argument list is empty—it assigns default values to all data in the object

Accepted Answer

default constructor

Question 27

Include this statement when you are using a Java package

Accepted Answer

import

Question 28

This package is automatically available to any Java program-manipulates Strings

Accepted Answer

String class

Question 29

Has the same name as the class Assigns initial values to the data of the class

Accepted Answer

constructor

Question 30

The operations for a class

Accepted Answer

methods

Question 31

A method that returns a value

Accepted Answer

value returning method

Question 32

How to instantiate objects and how to call methods

Accepted Answer

API (Application Programming Interface)

Question 33

Data is private to the classMethods of other classes cannot directly access data

Accepted Answer

encapsulates

Question 34

Special literal value; object reference is first declared--has not been assigned to an object

Accepted Answer

null

Question 35

Part of the java.text package and allows you to apply decimal formats to numbers

Accepted Answer

DecimalFormat class

Question 36

Consists of a comma separated list of initial data values to assign to the object

Accepted Answer

argument list

Question 37

The white-space characters that separate input using a ScannerJava Whitespace Characters

Accepted Answer

delimiters

Question 38

Only other methods of the class can call the method

Accepted Answer

private

Question 39

Enables clients to access the value of the instance variables of an object

Accepted Answer

accessor method

Question 40

Java classes are grouped according to functionality

Accepted Answer

packages

Question 41

Invoking a method on an object

Accepted Answer

calling the method

APCS A Ch. 3 Vocabulary after scavenger hunt

Questions 41

APCS A Ch. 3 Vocabulary after scavenger hunt

Questions 41