Introduction: Java - Basic Syntax

Java is a high-level programming language originally developed by Sun Microsystems and released in 1995. Java is a collection of objects that communicate via invoking each other's methods. Let us now briefly look into what do class, object, methods and instance variables mean.

Object - Objects have states and behaviors. Example: A dog has states - color, name, breed as well as behaviors -wagging, barking, eating. An object is an instance of a class.

Class - A class can be defined as a template/ blue print that describes the behaviors/states that object of its type support.

Methods - A method is basically a behavior. A class can contain many methods. It is in methods where the logics are written, data is manipulated and all the actions are executed.

Instance Variables - Each object has its unique set of instance variables. An object's state is created by the values assigned to these instance variables.

First Java Program

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public class MyFirstJavaProgram {

/* This is my first java program.
* This will print 'Hello World' as the output */

public static void main(String []args) {

System.out.println("Hello World"); // prints Hello World
}

}

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Comments

author
seamster (author)2015-05-27

Good info for starters, thanks! Will you be adding more to this? I hope you do! :)

author
Kevin-O-Brien (author)seamster2015-05-28

thanks for your appreciation

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Bio: Kevin O'Brien and I'm a Software Developer, currently working with It's Your Skills Which is located in Chennai Tamil Nadu.
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