TCU CoSc 10403 Programming with Java

1
TCU CoSc 10403 Programming with Java

• Lecture 1
• Development Environment

2
Agenda

• Roll
• Last time
• Course Overview
• Today
• Lab submission process
• Creating Java programs with Code Warrior

3
Reference

• Lab and CodeWarrior Introduction
• On course web page
• http//www.cs.tcu.edu/10403/
• Help sessions scheduled soon
• To work through the intro
• Work through intro carefully
• Avoid headaches later!

4
Basic Steps

• Setting up your environment
• Tools IE, CodeWarrior, TURNIN
• Frogfile (U drive)
• Where your applets (not source code) will be
  posted
• Watch disk space quota!
• I drive
• Files to setup your Frogfile to submit your labs

5
Basic Steps

• Codewarrior (demo with HelloWorld)
• New ? Java stationary
• Lab0Project
• JDK 1.3 ? Java Applet
• Edit
• .java file
• .html file
• Project ? Run

6
Basic Steps

• Publishing your applet (class,html files)
• COPY
• Lab0.html file
• JavaClasses folder
• Test on IE
• http//stuwww.tcu.edu/myname/10403labs.html

7
Basic Steps

• Submitting your Java source (.java)
• TURNIN
• Select Course (e.g., 10403-15)
• Select Lab (e.g., Lab0)
• Enter your TCU email
• KEEP YOUR RECEIPT NUMBER!

8
Java Overview

• Applets
• Html file java class files (bytecodes)
• Browser with JVM
• Applications
• Executes outside a browser
• Later in the course
• Starting Spring 2004

9
Sample Java Program

• import java.applet.
• import java.awt.
• /
• HelloWorld program in Java taken from Java
  Programming for Dummies
• LJB Feb. 99
• /
• public class HelloWorld extends Applet
• Label helloLabel new Label ("Hey, are you
  looking at me?")
• public void init ()
• setBackground (Color.yellow)
• add (helloLabel)

10
Some Java Data Types

• Integer ? -2054 21013
• Floating point ? -32.7 13.01
• Boolean ? true false
• Characters ? A ? _at_
• Strings ? Cats are great!
• Class types ? Graphics g
• object of type Graphics

11
Java Language Features

• Comments / / or //
• Operators , - , , /
• Expression (9.0/5.0)celsius 32
• Statements
• farenheit (9.0/5.0)celsius 32
• If (number gt 0)
• average sum / count