1. Advanced OOP MCS-3 OOP BSCS-3 Lecture # 1

2. Compulsory Reading Material
Java; How to Program (9th Edition) by
Paul Deitel & Harvey Deitel

3. Characteristics Of Java
Java Is Simple
Java Is Object-Oriented
Java Is Distributed
Java Is Interpreted
Java Is Robust
Java Is Secure
Java Is Architecture-Neutral
Java is Portable / Platform Independent
Java's Performance
Java Is Multithreaded
Java Is Dynamic

4. JDK Versions JDK 1.02 (1995) JDK 1.1 (1996) JDK 1.2 (1998)
A Java Development Kit (JDK) is a program development environment for writing Java applets and applications.
JDK 1.02 (1995)
JDK 1.1 (1996)
JDK 1.2 (1998)
JDK 1.3 (2000)
JDK 1.4 (2002)
JDK 1.5 (2004) a. k. a. JDK 5 or Java 5
JDK 1.6 (2006) a. k. a. JDK 6 or Java 6
JDK 1.7 (possibly 2010) a. k. a. JDK 7 or Java 7

5. JDK Editions Java Standard Edition (J2SE)
J2SE can be used to develop client-side standalone applications or applets.
Java Enterprise Edition (J2EE)
J2EE can be used to develop server-side applications such as Java servlets and Java ServerPages.
Java Micro Edition (J2ME).
J2ME can be used to develop applications for mobile devices such as cell phones.

6. Which Java?
Java 6+ JDK (Java Development Kit), Standard Edition includes:
JDK (Java development kit) – for developing Java software (creating Java programs.
JRE (Java Runtime environment) – only good for running pre-created Java programs.
Java Plug-in – a special version of the JRE designed to run through web browsers.
A plug-in is a software component that adds a specific feature to an existing software application.
Most latest JDK and its documentation can be downloaded from:

7. Popular Java IDEs NetBeans; Open Source by Sun
Eclipse; Open Source by IBM
Borland Jbuilder
BlueJ
Jcreator
IntelliJ IDEA
Dr. Java

8. Java Vs. Java Script
Java is an OOP programming language while Java Script is an OOP scripting language.
Java creates applications that run in a virtual machine or browser while JavaScript code is run on a browser only.
A Java virtual machine (JVM) is a virtual machine that can execute Java bytecode. It is the code execution component of the Java platform.
In a sense, JVM is both an interpreter and a compiler, but not purely.
Java code needs to be compiled while JavaScript code are all in text.
They require different plug-ins.

9. A High Level View Of Translating/Executing Java Programs
Traditional Compiled Program
Java Program
The Java development environment has two parts: a Java compiler and a Java interpreter.
The Java compiler takes your Java program and instead of generating machine codes from your source files, it generates bytecodes.
To run a Java program, you run a program called a bytecode interpreter, which in turn executes your Java program

10. A High Level View Of Translating/Executing Java Programs
Stage 1: Compilation
Java program
Filename.java
Java compiler (javac)
Java bytecode (generic binary)
Filename.class
Bytecodes are a set of instructions that looks a lot like some machine codes, but that is not
specific to any one processor.

11. A High Level View Of Translating/Executing Java Programs
Stage 2: Interpreting and executing the byte code
Machine language instruction (UNIX)
Machine language instruction (Windows)
Machine language instruction (Apple)
Java bytecode (generic binary)
Filename.class
Java interpreter (java)

12. Assignment # 1
Find out the Difference b/w Java & other programming languages.
What is the connection between ORACLE and Java?

13. Good Luck ! ☻