How to Learn Java Programming

1. JAVA TUTORIAL FOR BEGINNERS HOW TO LEARN JAVA PROGRAMMING

2. CONCEPTS 1. Overview 2. A Simple Main Program 3. OOP's Concept

3. OVERVIEW Java is a high-level programming language. Its main feature is a Platform Independency making it different from other languages. Platform Independency means Java compiler generates bytecode instead of machine code. This bytecode can be run on any machine where JVM is available. Java Compiler Java Interpreter Source Code Bytecode Machine Code

4. OTHER FEATURES Object Oriented Architecture Neutral Multithreaded Robust Secured Simple

5. SIMPLE JAVA PROGRAM class Demo { public static void main(String args[]) { System.out.println("Hello World"); } }

6. EXECUTION OF PROGRAM To Compile the above code write the following code javac Demo.java To Run the above code write the following code java Demo

7. OBJECT ORIENTED CONCEPT Object Polymorphism Abstraction Class Encapsulation Inheritance

8. OBJECT & CLASS It is a real-time entity that has state and behavior. It may be physical and logical. Object: Class: It is a collection of objects. It is a logical entity.

9. POLYMORPHISM .One task is performed by different ways is called polymorphism. In Java, we can achieve Polymorphism through Method Overloading and Method Overriding

10. ENCAPSULATION Encapsulation is binding up of Data and Code into a single unit. A Java class is an example of Encapsulation. Java Bean is fully encapsulated class.

11. ABSTRACTION Abstraction: Hiding details (Implementation ) and showing only functionality Example- We just send message but we don't know its internal sending process

12. INHERITANCE When one object acquires all the property and behavior of its parent object , is known as Inheritance. It provides code reusability. Java doesn't support Multiple Inheritance. But In Java, we can achieve concept of Multiple Inheritance through Interfaces

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