2 Flashcards
A sequence of operands and operators that computes a value.
Arithmetic Expressions
Explanatory sentences inserted in a program in such a manner that the compiler ignores them.
Comments
A grid that allows a programmer to specify positions of points in a plane or of pixels on a computer screen.
Coordinate System
An abnormal state or error that occurs during runtime and is signaled by the operating system.
Exception
In java, an object associated with a component where the images for that component are drawn.
Graphics Context
An error such that a program runs, but unexpected results are produced. Also referred to as a design error.
Logic Error
The point (0,0) in a coordinate system.
Origin
A group of related classes in a named directory.
Package
A stylized half-English, half-code language written in English but suggestion Java code.
Pseudocode
Words that have predefined meanings that cannot be changed.
Reserved Words
An error that occurs when a program asks the computer to do something that it considers illegal, such as dividing by 0.
Run-Time Error
A coordinate system used by most programming languages in which the origin is in the upper-left corner of the screen, window, or panel, and the y values increase toward the bottom of the drawing area.
Screen Coordinate System
Rules for interpreting the meaning of statements.
Semantics
Rules for combining words into sentences.
Syntax
A program that can enter a computer and perhaps destroy information.
Virus
Set of all words and symbols in the language.
Java Vocabulary
Numbers, characters, and Booleans. combined in expression with operators,
Primitive Data Types
Sent messages.
Objects
int, double, short, long, byte, and float
Name the 6 numeric data types
Items whose values do not change, like the number 5.0 or the string “Java”.
Literals
