1. Chapter Two Applet vs. Application
A first Java Program
Chapter Two
Applet vs. Application

2. Both types of programs
Applet - Part of web page (can test w/o web page but need browser or applet viewer)
Application - free standing program w/
purpose
inventory, billing, payroll etc. etc.

3. How to start IDE (desktop) a help to complete the process
J++, Jbuilder - Windows based
JDK - DOS based
Operating Systems
DOS, Windows, UNIX
Line vs. GUI

4. Libraries of commands used by everyone all the time
copy
print
save
edit
file - LOTS MORE TOO….

5. Files - all types WP documents (letters, memos) Java Programs
“pure” data
data bases
Drive:filename. Extension
Folders - sub directories -paths

6. Filing System - How to:
Create
display
group
run
find

7. Editors
Various
create, retrieve, delete text, insert text, move, copy, search

8. Programs to help use Java
Editor - create source program
Compiler - create Class file (from source)
Linker - pulls in libraries
Appletviewer - or browser to view Applets

9. Text of a Java Program import java.awt.*; import java.applet.Applet;
public class Greeting extends Applet {
public void paint (Graphics g) {
g.drawString(“Hello” , 50, 50); }}

10. WARNINGS Case must match (uppercase/lowercase)
File name must be same as class file name
Spelling - braces - punctuation
Greeting.java NOT greeting.java

11. Compile (with JDK) javac Greeting.java Common syntax errors (review)
If no errors
java Greeting (if Application)
appletviewer Greeting.html

12. HTML File Greeting.html (other names possible)
<title> Web page applet </title>
<applet “code = Greeting.class” width = 300 height = 200> </applet>

13. After HTML created/saved
Appletviewer Greeting.html
watch the applet appear

14. The libraries used
Like Math when using square root or tan, cos, sine etc.
import java.applet.Applet
java = entire language
applet = superclass
Applet = needed for your Greeting program
import java.awt.*; =Abstract Windowing Tool * = wildcard.