Lesson 1 - Creating Java Programs

Question 1

Computer program

Answer 1

A set of instructions that you write to tell a computer what to do

Question 2

Hardware vs Software

Answer 2

Hardware is computer equipment (keyboard or monitor)

Software is a computer program

Question 3

Application software

Answer 3

Program that performs a task for the user

Question 4

System Software

Answer 4

Program hat manages the computer itself

Question 5

Logic

Answer 5

Determines the exact order of instructions to produce desired results

Question 6

Machine language/code

Answer 6

Is the most basic set of instructions that a computer can execute

Question 7

Low level programming language

Answer 7

A programming language that corresponds closely to a computers circuitry

Question 8

High-level programming language

Answer 8

Allow you to use vocabulary of terms instead of sequences of binary to perform a task

Question 9

Syntax

Answer 9

Rules about how language elements combine to produce usable commands

Question 10

Program statements/Commands

Answer 10

Statements that carry out the tasks they want the program to perform

Question 11

Compiler

Answer 11

Translates an entire program before executing tasks

Question 12

Interpreter

Answer 12

Translation one program statement at a time, executing a statement as soon as it is translated

Question 13

Syntax error

Answer 13

Invalid program statement

Text editor usually catches syntax errors

Question 14

Bugs

Answer 14

Flaws in a program

Question 15

Debugging

Answer 15

The process of removing flaws or errors from a program

Question 16

Logic error

Answer 16

Bug that allows a program to run, but does not produce the desired result

Not a syntax error

Can only be fixed by reviewing the program

Also known as semantic errors

Question 17

Procedural programming

Answer 17

Style of programming in which operations are executed one after another in a sequence

Create names that can hold values

Question 18

Variables

Answer 18

Named computer memory locations

A name that can be assigned with a value

Ex.

rateOfPay
(It may contain different values based on the employee)

Question 19

Procedures

Answer 19

Logical units that are groups of individual operations used in a computer program

Synonym: modules, methods, functions, subroutines

Question 20

Object oriented programming

Answer 20

• creating classes, which are blueprints for objects
• creating objects, which are specific instances of this classes
• creating applications that manipulate or use those objects

Extension of procedural programming

Question 21

Computer simulations

Answer 21

Programs (typically object-oriented) that try to mimic real world activities so that their processes can be improved

Question 22

Graphical User Interfaces (GUI)

Answer 22

Program (typically object-oriented) that allow users to interact with a. Program in a graphical environment

Question 23

Class

Answer 23

Term that describes a group or collection of objects with common properties

Question 24

Class definition

Answer 24

Describes what attributes it’s objects will have and what those objects can do

Question 25

Attributes

Answer 25

Also known as properties Define an object

Question 26

Object

Answer 26

Specific, concrete instance of a class

Question 27

State (for an object)

Answer 27

Values of the properties of an object

Question 28

Method

Answer 28

Def contained block of program code that carries out some action

Question 29

Inheritance

Answer 29

The ability to create classes that share the attributes and methods of existing classes, but with more specific features. Automobile is a class Convertible inherited the attributes and methods of Automobile

Question 30

Polymorphism

Answer 30

Feature of languages that allows the same word or symbol to be interpreted correctly in different situations based on context

Question 31

Java

Answer 31

Object oriented language for general purpose business applications and for interactive, World Wide Web-based applications

Question 32

Architecturally neutral

Answer 32

Can be used on any operating system

Question 33

Java Virtual Machine

Answer 33

Java computer that runs on software not hardware. This allows it to be architecturally neutral

Question 34

Source code

Answer 34

Programming statements written in a high level programming language

Question 35

jGRASP

Answer 35

Free source code editor

Question 36

Development enviroment

Answer 36

A set of tools that help you write programs by providing such features as displaying a languages keywords in color

Question 37

Bytecode

Answer 37

Binary program

Question 38

Java interpreter

Answer 38

Checks bytecode and communicated with operating system, executing instructions line by line in the JVM

Question 39

Applets

Answer 39

Programs that are embedded in a web page

Question 40

Java applications

Answer 40

Stand alone applications

Question 41

Console applications

Answer 41

Java applications that support character or text output to a computer screen

Question 42

Windowed applications

Answer 42

Java applications that create a GUI with elements such as menus, toolbars, and dialog boxes

Question 43

Literal string

Answer 43

A series of characters that will appear in output exactly as entered. Placed in double quotation marks

Question 44

Arguments

Answer 44

Pieces of information sent to a method Ex. println(“Hi”); Hi is argument println is method

Question 45

Passing arguments

Answer 45

Sending arguments to method

Question 46

Standard output device

Answer 46

Generally denoted by out Mostly am monitor

Question 47

Access specifier

Answer 47

Defines circumstances under which a class can be accessed

Question 48

Class body

Answer 48

Any data items or methods in a class Contained in { }

Question 49

Whitespace

Answer 49

Any combination of non printing characters

Question 50

Static

Answer 50

Keyword that’s says the method is accessible and usable even though no objects of the class exist

Question 51

Void

Answer 51

The method does not return any value when it is called

Question 52

Parsing

Answer 52

Process compiler used to divide source code into meaningful portions

Question 53

Run-time error

Answer 53

An error not detected until the program asks the computer to do something wrong while executing

Question 54

Java API

Answer 54

Java class library Contains info about how to use every prewritten Java class with list of methods that correspond to those classes