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1. JAVA SE

2. OBJECTIVES:
 Introduction
 Need of Programming languages
 Different Programming languages
 Java need in today’s world
 Categorization of java
 Installation of a JDK
 Execution of a java program
 JRE – JVM – JDK – SDK - IDE

3. Introduction
 A programming language is an artificial language
designed to communicate instructions to a
machine, particularly a computer.
 Programming languages can be used to create
programs that control the behavior of a machine
and/or to express algorithms precisely.

4. Contd…
 The description of a programming language is
usually split into two components. They are
Syntax (form) and Semantics (meaning).
 Finally programming language is a language,
which is used to maintain communication with a
System.

5. Need of Programming languages

6. Different Programming languages
Applications and Artificial Intelligence Database development Script development
Program development
development DBASE awk
C AIML FoxPro
bash
C# C MySQL
C++ C# SQL Batchfile
D C++ Visual FoxPro Perl
Java Prolog Tcl
Tcl
Visual Basic
Game Computer drivers or Internet and web page
development other hardware development
interface development
C HDML
C# HTML
C++ Assembly
C Java
DarkBASIC JavaScript
Java Perl
PHP
XML

7. Java needs in today’s world
 For Desktop
 Enterprise
 Go Mobile
 Embedded
 Internet (Client/Server)

8. Categorization of java
 Java Card
 Micro Edition (ME) JAVA ME
 Standard Edition (SE) JAVA SE
 Enterprise Edition (EE) JAVA EE
 JavaFX
 PersonalJava (discontinued)

9. Java Platform & VM & Devices

10. Versions of java
 JDK 1.0 (January 23, 1996)
 JDK 1.1 (February 19, 1997)
 J2SE 1.2 (December 8, 1998)
 J2SE 1.3 (May 8, 2000)
 J2SE 1.4 (February 6, 2002)
 J2SE 5.0 (September 30, 2004)
 Java SE 6 (December 11, 2006)
 Java SE 7 (July 28, 2011)

11. Installation of a JDK (JAVA SE)
 Video reference

12. Execution of a java program
 Write a program in Notepad or IDE or any text editor
 Save as FileName.java
 Compile javac FileName.java
 Run java FileName.java

13. Source Computer
Java Program Compilation Java ByteCode
Internet
Verification
Your computer
Restricted Env.
Java ByteCode Execution

14. Execution model of java
source bytecode
(text) compiler (aka. class file)
JVML
dynamic
loading
virtual machine verifier
JIT compiled
bytecode code
compiler
interpreter
CPU

15. JRE – JVM – JDK – SDK - IDE
 JRE : JAVA RUNTIME ENVIRONMENT
 JVM : JAVA VIRTUAL MACHINE
 JDK : JAVA DEVELOPMENT KIT
 SDK : SOFTWARE DEVELOPMENT KIT
 IDE : INTEGRATED DEVELOPMENT ENVIRONMENT

17.  JVM : A self-contained operating
environment that behaves as if it is a separate
computer. For example, Java applets run in a Java
virtual machine (JVM) that has no access to the host
operating system.
 JRE: Java Run-Time Environment is the part of the
Java Development Kit (JDK) required to run Java
programs.
It comprises the Java Virtual Machine,
the Java platform core classes, and supporting files. It
does not include the compiler, debugger, or other tools
present in the JDK. ...

18.  JDK(Java Development Kit) :
software development package from Sun Microsystems
that implements the basic set of tools needed to write, test
and debug Java applications and applets
 SDK(Software Developers Kit)
a set of tools, including API, frameworks, interface
elements, etc. used to create software, i.e. apps.
 IDE:
An integrated development environment (IDE) (also
known as integrated design environment, integrated
debugging environment or interactive development
environment) is a software application that provides
comprehensive facilities to computer programmers for
software development.

20. Questions…
1) What is the use of bin and lib in JDK?
A) Bin contains all tools such as javac, appletviewer, awt tool, etc., whereas lib
contains API and all packages.
2) Question: What's the difference between J2SDK 1.5 and J2SDK 5.0?
A) There's no difference, Sun Microsystems just re-branded this version.
3) The Differences among Java, C And C++ ?
A) Paradigm , Preprocessor, Memory Management, Pointers, Bounds
Checking, Portability And Performance, Complex Data Types, Strings,
Multiple Inheritance, Goto Statement …

21. Feature C C++ Java
OOP, Generic
Procedural, OOP, Generic
Paradigms Procedural Programming (from Java
Programming
5)
Form of Compiled Source
Executable Native Code Executable Native Code Java bytecode
Code
Managed, using a garbage
Memory management Manual Manual
collector
Yes, very commonly used,
No pointers; references
Pointers Yes, very commonly used. but some form of
are used instead.
references available too.
Preprocessor Yes Yes No
String Type Character arrays Character arrays, objects Objects
Complex Data Types Structures, unions Structures, unions, classes Classes
Single class inheritance,
Inheritance N/A Multiple class inheritance multiple interface
implementation
Operator Overloading N/A Yes No
Yes, with warnings if loss Yes, with warnings if loss Not at all if loss could
Automatic coercions
could occur could occur occur; msut cast explicitly
Variadic Parameters Yes Yes No
Goto Statement Yes Yes No

22. To be contd…