Getting Started

ARCS Lab.

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The Java Technology Phenome-non

Talk about Java technology seems to be everywhere, but what exactly is it?► About the Java Technology► What Can Java Technology Do?► How Will Java Technology Change My Life?

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About the Java Technology

The Java Programming Language ► High performance

► Robust► Secure

► Simple► Object oriented► Distributed► Multithreaded► Dynamic► Architecture neu-

tral► Portable

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About the Java Technology An overview of the Software development

process

CompilerJavaVM

0100101…

MyProgram.java MyProgram.class My Program

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About the Java Technology Through the Java VM, the same application

is capable of running on multiple platformsClass HelloWorld { public static void main(string[] arcs) { System.out.println(“Hello World!”); }}

HelloWorld.java

JVMJVM JVM

Compiler

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About the Java Technology The Java Platform

► The Java Virtual Machine► The Java Application Programming Interface

(API)

MyProgram.javaAPIJava Virtual Machine

Hardware-Based Platform

Javaplatform

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What Can Java Technology Do? Development Tools Application Programming Interface (API) Deployment Technologies User Interface Toolkits Integration Libraries

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How Will Java Change My Life? Get Started quickly Write less code Write better code Develop programs more quickly Avoid platform dependencies Write once, run anywhere Distribute software more easily

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The “Hello World!” Application A Checklist

► The Java SE Development Kit (JDK 6)► For MS Windows, Solaris and Linux

http://www.oracle.com/technetwork/java/javase/downloads

► For Mac OS Xhttp://developer.apple.com

► The Eclipse IDEhttp://www.eclipse.org/downloads/

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Creating Your First Application Create a Java Project

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Creating Your First Application In the Name and Location page of the wiz-

ard, do the following

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Creating Your First Application Create a Class

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Creating Your First Application Create a Class

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Creating Your First Application

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A Closer Look at the “Hello World!”

Source Code Commentspackage test;

public class FirstClass{ /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub System.out.println(“Hello, Sungkyunkwan University!”); }}

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A Closer Look at the “Hello World!”

The “FirstClass” Class Definitionpackage test;

public class FirstClass{ /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub System.out.println(“Hello, Sungkyunkwan University!”); }}

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A Closer Look at the “Hello World!”

The “test” Package Definitionpackage test;

public class FirstClass{ /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub System.out.println(“Hello, Sungkyunkwan University!”); }}

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A Closer Look at the “Hello World!”

The “main” Method Definitionpackage test;

public class FirstClass{ /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub System.out.println(“Hello, Sungkyunkwan University!”); }}

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Q & A