Chapter 3

Question 1

arithmetic expression

Answer 1

A sequence of operands and operators combined in a manner familiar from algebra. (63)

Question 2

comments

Answer 2

Explanatory sentences inserted in a program in such a manner that the compiler ignores them. (77)

Question 3

coordinate system

Answer 3

A mechanism for locating the positions of points and other objects in space. (94)

Question 4

exception

Answer 4

An abnormal state or error that occurs during run time and is signaled by the JVM. (84)

Question 5

graphics context

Answer 5

An object that supports the drawing of shapes and images in a program. (95)

Question 6

keywords

Answer 6

Words that have predefined meanings that cannot be changed. (71)

Question 7

literal

Answer 7

An item in a program whose value does not change. (60)

Question 8

logic error

Answer 8

Occurs when a programmer fails to express him/herself accurately; also called design errors or bugs. (82)

Question 9

method signature

Answer 9

A method’s name and the types and number of its parameters. (71)

Question 10

origin

Answer 10

The position (0,0) of a point in space or of a pixel on a computer terminal screen. (94)

Question 11

package

Answer 11

A group of related classes in a named directory that makes it easy for programmers to share code. (73)

Question 12

pseudocode

Answer 12

A half-English / half-code style of writing that expresses an algorithm. (79)

Question 13

reserved words

Answer 13

Words that have predefined meanings that cannot be changed. (71)

Question 14

run-time error

Answer 14

An error that occurs when a programmer asks a computer to do something that it considers illegal. Program execution halts with an error message. (82)

Question 15

screen coordinate system

Answer 15

A mechanism for locating the positions of pixels on a computer terminal screen. (94)

Question 16

semantics

Answer 16

Define the rules for interpreting the meaning of statements. (58)

Question 17

syntax

Answer 17

The rules for combining words into statements. (58)

Question 18

syntax errors

Answer 18

Errors that occur when a syntax rule is violated - such as a missing semicolon at the end of a statement. Syntax errors are detected at compile time. (82)

Question 19

variable declaration statement

Answer 19

A statement in which a program declares a variable’s type before it can be used in the program.(62)

Question 20

virus

Answer 20

A computer program that can replicate itself and move from computer to computer. (81)