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Java Exam 2
Java terms
18
Computer Science
Undergraduate 2
10/30/2008

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Term
String
Definition
Sequence of zero or more characters
Term
Reference Variable
Definition
Stores the address of a memory space
Term
Primitive type variable
Definition
Directly store data in their memory space
Term
Instantiation
Definition
Create an object using a class
Term
Library
Definition
collection of packages
Term
Package
Definition
Collection of classes
Term
Class
Definition
Collection of methods
Term
method
Definition
Instructions that preform a task
Term
Dot(.)operator
Definition
Used to access a method in a class
Term
Parameters
Definition
What we pas to the method (math.pow(2,3) = 2 raised to the 3 = 8, 2 and 3 are the parameters)
Term
object
Definition
Something created from a class, memory location where the data is stored.
Term
printf
Definition
a method which allows the ability to format output
Term
Integer.parseInt
Definition
Takes a string and converts it to an int
Term
File
Definition
an area in secondary storage used to hold info
Term
Dialog Boxes
Definition
used to input data and output data
Term
JoptionPane
Definition
GUI (graphical user interface), a class, makes programs more attractive
Term
ShowInputDialog
Definition
allows user to input a string from keyboard
Term
showMessageDialog
Definition
allows programmer to display data
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