Intro To Software Development

Question 1

JDK

Answer 1

Java Development Kit

Question 2

Editor

Answer 2

Programmer writes source code

Question 3

Linker

Answer 3

Converts one or several object modules into an executable program

Question 4

Compiler

Answer 4

Converts source code to object code (machine code)

Question 5

Debugger

Answer 5

Program, makes it easier to find bugs (semantics errors)

Question 6

IDE

Answer 6

Integrated Development Environment

Question 7

Compiled language

Answer 7

Edit- compile- link- run

Question 8

Interpreter languages

Answer 8

Edit - run

Question 9

Compiler vs interpreter

Answer 9

Both: check syntax, concert source -machine code

Compiler: all at once (executable runs faster)

Interpreter: one line at a time (slower execution)

Question 10

Java’s hybrid approach

Answer 10

Compiler & interpreter

Compiler: source code - instructions for the Java virtual machine

Instructions = BYTECODES, same for any computer

CPU specific Java interpreter interprets bytecodes on particular computer

Question 11

Bytecodes

Answer 11

• platform independent
• source code not revealed to end users (security)
• interpreter =add. security checks, takes away bad code
• can’t get to hardware in Java

Question 12

Types of programs

Answer 12

Console Applications
GUI Applications
Applets

Question 13

Console applications

Answer 13

Simple text dialog
•command - line arguments
(Passed to main as array of string)

Question 14

GUI Applications Include

Answer 14

Menus, buttons, clickable panel, slider, GUI LIBRARIES

Question 15

Applets

Answer 15

No main, initial method called by JDKs appletviewer (the browser)

Question 16

OOP

Answer 16

Object Oriented Program

Question 17

OOP

Answer 17

• dealing with other objects
• Inheritance, starts off general then enhances as you go down
• teamwork, reusable software, faster GUI

Question 18

Inheritance

Answer 18

SUBCLASS extends SUPERCLASS; programmers define HIERARCHIES of classes. Can redefine or add new features, most GENERAL closest to the TOP

Question 19

Software concerns

Answer 19

Readability, productivity (how fast), maintainence

Question 20

IDE vs JDK

Answer 20

• JDK installed separately, IDE on top of it
• IDE adds GUI to all JDK stuff
• JDK doesn’t have GUI

Question 21

GUI Applications

Answer 21

(Programs installed directly into computer)
•requires Internet & browser, syntax slightly diff

Internet APPS

Question 22

BYTECODES

Answer 22

MULTI PLATFORM

• smaller than source codes
• security checks
• faster than directly interpreted language, bytecodes – machine codes quicker