1 Web Programming with Java Introduction to Java Huynh Huu Viet Email: viethh@uit.edu.vn Department of Information Systems 2008 © Department of Information Systems - University of Information Technology 2 Outline What is Java?  A little bit history  Major features Where Java is used?  Java, the World Wide Web, and Beyond Key terms A Simple Java Program IDE: NetBeans Resources Discussion 2008 © Department of Information Systems - University of Information Technology 3 What is Java?  An object-oriented programming language developed by Sun Microsystems  Also a platform to support Java applications (technology)  A little bit history  1991: A team led by James Gosling at Sun Microsystems developed Oak, for use in embedded consumer electronic appliances  1995: renamed Java - redesigned for developing Internet applications (Java 1.0 1.1).  1998: Sun announced the Java 2 platform (1.2,1.3,1.4)  2005 - Now: Java 5 (Java 1.5 - newest version 1.7) 2008 © Department of Information Systems - University of Information Technology 4 Java major features (1)  Simple  A bit easier C++.  The clean syntax  Object-Oriented  Reuse code  Distributed  Designed to make distributed computing easy  Writing network programs as sending and receiving data to and from a file.  Secure:  Based on the premise that nothing should be trusted. 2008 © Department of Information Systems - University of Information Technology 5 Java major features (2) Platform-independent  One program that will run on any platform with JVM Portable  Java programs can be run on any platform without being recompiled Multithreaded  Program’s capability to perform several tasks simultaneously.  A necessity in multimedia and network programming 2008 © Department of Information Systems - University of Information Technology 6 Where Java is used? Desktop standalone applications Web applications  Client side: applets  Server side: Java servlets or JavaServer Pages (JSP) Embedded applications for small hand-held devices 2008 © Department of Information Systems - University of Information Technology 7 Key terms(1)  Java language specification (JLS):  Syntax and semantics of the Java programming language  Java API  Predefined classes and interfaces for developing Java programs  JLS is stable, but the API is still expanding  Java API – 3 Editions  Java 2 Standard Edition (J2SE): develop client-side standalone applications or applets  Java 2 Enterprise Edition (J2EE): develop server-side applications: Java servlets and JavaServer Pages  Java 2 Micro Edition (J2ME): develop applications for mobile devices 2008 © Department of Information Systems - University of Information Technology 8 Key terms(2)  JDK- Java Development Kit ( SDK -System Development Kit)  Programs for developing and testing Java programs  JRE - Java Runtime Environment  Programs for running Java programs  Includes: interpreter, core classes, and supporting files  A subset of JDK  IDE- Integrated Development Environment  Java development tool for rapidly developing Java programs  Three major IDE: • JBuilder by Borland (http://www.borland.com/) • NetBeans Open Source by Sun (http://www.netbeans.org/ ) • Eclipse Open Source by IBM (http://www.eclipse.org/ ) 2008 © Department of Information Systems - University of Information Technology 9 Key terms(3) 2008 © Department of Information Systems - University of Information Technology 10 A Simple Java Program(1) [...]...A Simple Java Program(2) 2008 © Department of Information Systems - University of Information Technology 11 Anatomy of a Java Program Comments Reserved words Modifiers Statements Blocks Classes Methods The main method 2008 © Department of Information Systems - University of Information Technology 12 Anatomy of a Java Program(1) Comments Line comment: // Paragraph... to the compiler: class, public… Java is case-sensitive Modifiers Keywords that specify the properties of the data, methods, and classes and how they can be used public, static, private, final, abstract, and protected Statements Represents an action or a sequence of actions 2008 © Department of Information Systems - University of Information Technology 13 Anatomy of a Java Program(2) Blocks Begins with. .. opening brace ({) Ends with a closing brace (}) Classes The essential Java construct Java program is classes Methods: Consists of a collection of statements that perform a sequence of operations The main method Defines where the program execution begins 2008 © Department of Information Systems - University of Information Technology 14 Netbeans (1) 2008 © Department of Information Systems - University of Information... IDE for Java Written in Java, available on any platform that Java is available on Supports plugins for working in other languages as well, such as C and C++ Current Version Stable: Netbeans IDE 6.1 Beta: Netbeans IDE 6.5 Available: http://www.netbeans.org 2008 © Department of Information Systems - University of Information Technology 16 Netbeans (3) 2008 © Department of Information Systems - University... Systems - University of Information Technology 17 Resources JDK 6: http:/ /java. sun.com/javase/downloads/index.jsp Java API (chm format): http://www.allimant.org/javadoc/index.php Netbeans IDE: http://www.netbeans.org/index.html Text Books: More information at UIT Forum – Course subforum 2008 © Department of Information Systems - University of Information Technology 18 Readings & Exercise Further Readings... Further Readings Chapter 1 [1], Chapter 2 [3] Exercises: [1]: 1.1 [3]: 2.14 Next week readings: [1]: Chapter 2,3,4 2008 © Department of Information Systems - University of Information Technology 19 Discussion 2008 © Department of Information Systems - University of Information Technology 20 . 1 Web Programming with Java Introduction to Java Huynh Huu Viet Email: viethh@uit.edu.vn Department of Information Systems 2008 © Department of Information Systems - University of. applications (Java 1.0 1.1).  1998: Sun announced the Java 2 platform (1.2,1.3,1.4)  2005 - Now: Java 5 (Java 1.5 - newest version 1.7) 2008 © Department of Information Systems - University. terms(2)  JDK- Java Development Kit ( SDK -System Development Kit)  Programs for developing and testing Java programs  JRE - Java Runtime Environment  Programs for running Java programs 