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P R O G R A M
class Demo
{
public static void main(String args[])
{
System.out.println("Hello World");
}
}](https://image.slidesharecdn.com/java-overview-170703111346/75/How-to-Learn-Java-Programming-5-2048.jpg)
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How to Learn Java Programming
The document is a tutorial for beginners on learning Java programming concepts, highlighting its features such as platform independence and object-oriented programming. It covers basic structure, a simple Java program, and key OOP principles like encapsulation, polymorphism, abstraction, and inheritance. Additionally, it provides examples of how to compile and execute Java code.
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How to Learn Java Programming
- 1. J A VA T U T O R I A L F O R B E G I N N E R S H O W T O L E A R N J A V A P R O G R A M M I N G
- 2. C O NC E P T S 1. Overview 3. OOP's Concept 2. A Simple Main Program
- 3. O V ER V I E W 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 Machine CodeBytecode
- 4. O T HE R F E A T U R E S Object Oriented Multithreaded Simple Robust Secured Architecture Neutral
- 5. S I MP L E J A V A P R O G R A M class Demo { public static void main(String args[]) { System.out.println("Hello World"); } }
- 6. E X EC U T I O N O F P R O G R A M To Compile the above code write the following code To Run the above code write the following code javac Demo.java java Demo
- 7. O B JE C T O R I E N T E D C O N C E P T Object Encapsulation Polymorphism Class Abstraction Inheritance
- 8. O B JE C T & C L A S S Object: Class: It is a real-time entity that has state and behavior. It may be physical and logical. It is a collection of objects. It is a logical entity.
- 9. P O LY M O R P H I S M .One task is performed by different ways is called polymorphism. In Java, we can achieve Polymorphism through Method Overloading and Method Overriding
- 10. E N CA P S U L A T I O N 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. A B ST R A C T I O N Abstraction: Hiding details (Implementation ) and showing only functionality Example- We just send message but we don't know its internal sending process
- 12. I N HE R I T A N C E 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
- 13. T H AN K Y O U http://www.java2blog.com/