Why
Why Java ?
Kiki Ahmadi
JUG-BONEK
OSUM ITS

Introduce Myself
• ITS Student
• Part time ERP
implementator
• OSUM ITS Leader
• JUG-BONEK
Moderator
Kiki Ahmadi
• Will be sharing with
- Kiki.ahmadi@gmail.com
you today  - linuxgembel.wordpress.com
- YM! = gembel_linux

Today’s Menu
• What is JAVA ?
• Is this easy ?
• Who’s in it ?
• The Java Platform
• What can you do with Java
• Getting Started
– The Best Tools in the World
– Largest Software Community in the World

What is JAVA
Programming Belongs to Sun
language Microsystem :
invented by http://java.sun.com
James Gosling

Java Virtual Machine
JVM is the core of JAVA technologies
The other language (C,C++, GTK, VB, Gambas)
Source code compiled for specific OS
Code
- .exe for Windows
- .bin for Linux
OS
Java with JVM
Source code compiled into .class file.
Code
Then JVM translated it to assigned
OS.
JVM
OS

Is it easy ?
Hmm, I wouldn’t say thatx
C ASP
printf(hello world) <% Response.Write(\"Hello World!\") %>
Ruby on Rails Python
print \"Hello, World!\"
puts “hello world”
Perl
PHP
print \"Hello, World!\"
<?php
echo 'Hello world!';
?>
Java is a little bit more complex…….

Simple Hello in Java
Java uses STRICT OOP…even for a hello world

Who’s In it

Java +-
+ Points -Points
• Portable • Strict
• Safe • Grows Rapidly
• Nice memory management • Not speed wise
• Widely Used
• Scalable
• Widely
• Extensive Library
• Open Source (Open JDK)
• Vendor Neutral

Java Platform
Java ME Java SE
Java EE Java Card
JavaFx

Java Platform

Development Stack
This is .NET
Web ASP.NET
IIS
Web Server
Microsoft Visual Studio
IDE
Database Connection LINQ ADO.NET
Runtime .NET Framework
Operating System Windows

Development Stack
Java is flexible
Language JRuby Jython Rhino JS Quercus PHP
Web Servlet JSP ZK Ajax
Tomcat Glassfish OC4J
Web Server
Netbeans Eclipse JDev Intelli JIdea
IDE
Database Connection JDBC HIBERNATE HADOOP
Runtime Sun JDK OpenJDK Oracle JRockit Harmony
Operating System LINUX MAC WIN SOLARIS

Java Robotics

Java Robotics

SUN SPOT

Getting Started
• Download JDK – Java Development Kit
• Search for tutorial
• Javapassion.com
• http://java.sun.com/docs/books/tutorial/
• Go Code
• Download IDE
• CODE CODE CODE!!!

Best IDE in the world
For the best job, use the best tools. Netbeans is the best
tools (Jolt, 2008)

The Largest Programming Community
• OSUM – OSUM.SUN.COM
• Java User Group
• JUG-Indonesia@yahoogroups.com
• JUG-Bonek@yahoogroups.com
• Netbeans User Group
• Glassfish User Group

So Why Java ?
The Future is JAVA….
*taken from Frans Thamura Why Java slides

THANK YOU
• kiki.ahmadi@gmail.com
• linuxgembel.wordpress.com
• YM! : gembel_linux
• jug-bonek@yahoogroups.com
• osum.sun.com/group/ITS