Java Terms

Question 1

Abstract Window Toolkit (AWT)

Answer 1

A collection of graphical user interface (GUI) components that were implemented using native-platform versions of the components. These components provide that subset of functionality which is common to all native platforms. Largely supplanted by the Project Swing component set.

Question 2

Abstract

Answer 2

A Java(TM) programming language keyword used in a class definition to specify that a class is not to be instantiated, but rather inherited by other classes. An abstract class can have abstract methods that are not implemented in the abstract class, but in subclasses.

Question 3

Abstract Class

Answer 3

A class that contains one or more abstract methods, and therefore can never be instantiated. Abstract classes are defined so that other classes can extend them and make them concrete by implementing the abstract methods.

Question 4

Abstract Method

Answer 4

A method that has no implementation.

Question 5

Actual Parameter List

Answer 5

The arguments specified in a particular method call

Question 6

Alpha Value

Answer 6

A value that indicates the opacity of a pixel.

Question 7

API

Answer 7

Application Programming Interface. The specification of how a programmer writing an application accesses the behavior and state of classes and objects.

Question 8

Appliances

Answer 8

Networked devices such as printers, Java(TM) technology-enabled terminals, and clients, that are managed using applications built using the Java Management API (JMAPI).

Question 9

Applet

Answer 9

A program written in the Java(TM) programming language to run within a web browser compatible with the Java platform, such as HotJava(TM) or Netscape Navigator(TM).

Question 10

Argument

Answer 10

A data item specified in a method call. An argument can be a literal value, a variable, or an expression.

Question 11

Array

Answer 11

A collection of data items, all of the same type, in which each item’s position is uniquely designated by an integer.

Question 12

ASCII

Answer 12

American Standard Code for Information Interchange. A standard assignment of 7-bit numeric codes to characters.

Question 13

Atomic

Answer 13

Refers to an operation that is never interrupted or left in an incomplete state under any circumstance.

Question 14

Bean

Answer 14

A reusable software component. Beans can be combined to create an application.

Question 15

Binary Operator

Answer 15

An operator that has two arguments.

Question 16

Bit

Answer 16

The smallest unit of information in a computer, with a value of either 0 or 1.

Question 17

Bitwise Operator

Answer 17

An operator that manipulates two values comparing each bit of one value to the corresponding bit of the other value.

Question 18

Block

Answer 18

In the Java(TM) programming language, any code between matching braces. Example: { x = 1; }.

Question 19

Boolean

Answer 19

Refers to an expression or variable that can have only a true or false value. The Java(TM) programming language provides the boolean type and the literal values true and false.

Question 20

Bounding Box

Answer 20

For a Raster object, the smallest rectangle that completely encloses all the pixels that are not fully transparent.