Il-Hyung Cho's Welcome Page

Il-Hyung Cho

Distributed and Concurrent Object Oriented System - CORBA, JAVA
Testing and verification of Distributed Object Systems
Object Oriented Design Patterns, Software Architecture
Object Oriented Analysis and Design (OOAD)
State Machine Representation of OO Systems: how state machine is used to specify concurrent behaviors of objects, how it is inherited, how one machine can talk to the other machines, ...
Computer Forensics, Network Security

Q: Why analysis?
A: To understand a system components and their interrelationships before design. Worry about what instead of how.
Q: What do we do in analysis?
A: Discover and identify objects and their behavior.
Q: What is developed from analysis?
A: The functional and requirement specification.
Q: What kinds of models do we have?
A: Requirement model --> Specification model
A: Analysis model --> Design model
- Requirements model capture the system functionality, user (human) interface, and user's working environment.
- Analysis model examines the vocabulary of a problem domain and attempts to use an object-oriented model to express the problem domain with classes and objects.
Q: Then, what does design do?
A: Design is more detailed and takes into consideration all aspects of the underlying system, environment, network, workstation, algorithm details, and so on.
Q: What do we have from design?
A: Results of design would be more detailed class definitions, class relationships, object relationships, and state trasition and object interaction diagram.

Java Home page: http://www.javasoft.com, http://java.sun.com
Java Training : Introduction to Java programming and GUI invironment
Java RMI
Doug Lea's new book: Concurrent Programming in Java http://www.awl.com/cp/lea.html.
Thanks to him for including my name on the Acknowledgments in his book
Java Design by Peter Coad : Several design principles using Composition and Interface. You need to drink Java and rethink what OO modeling would be like. Think about behaviour of objects you are dealing with rather than the objects themselves.
JavaDoc on WinHelp format, Java/Netscape developing kit, and etc
Other interesting sites: Java World, Gamelan, Digital Espresso, Symantec Cafe, Java Books, VPRO, FAQ, Another FAQ, Dr. Java, Thingtone's Java Workshop, Glasgow Persistent Java

John McGregor
Doug Lea's work on Basic Concurrency Mechanics in Java is a good place to start working with Java threads. It also gives insight of how active object design patterns look like.
David Harel's work on Statecharts opened a door for me to look at object orientation of the state machine