About Instance Variables in Java Programming

In this tutorials we will discussed more about variables in java programming of Instance Variables. 

Types of variables:

Class Or Static 
Instance 
Local
Parameters Or Arguments 

What we need before start the code, I'm using as mention below and already installed in my system:
1. JDK1.6 or +
2. Eclipse
3. Windows OS
4. Basic knowledge of java

Let's start:

Verify the JDK installation

Open the command prompt and verify the java installation
Type the 
C:\>javac -version
javac 1.7.0_25

C:\>java -version
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b17)
Java HotSpot(TM) Client VM (build 23.25-b01, mixed mode, sharing)

Now java installation got verified, as installed JDK1.7.0_25

Verify the Eclipse installation

Go the the installation directory of eclipse and click on the eclipse.exe

e.g C:\eclipse\eclipse-java-mars-1-win32\eclipse\eclipse.exe

Create the new java project in Eclipse

Open the eclipse
File
New
Java project
Type the project name: Variables_In_Java_Programming
Next
Finish

Create the InstanceVariablesInJava.java file

Right click on the src created under project Variables_In_Java_Programming
New
Class
Type the name of class: InstanceVariablesInJava
Type the package name: com.variables.atozexamples
Finish

package com.variables.atozexamples;

public class InstanceVariablesInJava {

       // Declared and instantiated with 100 value

       // This is also called as filed.

       private int iInstanceVariables;

       public InstanceVariablesInJava() {

              // TODO Auto-generated constructor stub

       }

      

       public InstanceVariablesInJava(int i, int b) {

              // TODO Auto-generated constructor stub

              this.iInstanceVariables = i;

       }

      

       public InstanceVariablesInJava(int iInstanceVariables) {

              // TODO Auto-generated constructor stub

              this.iInstanceVariables = iInstanceVariables;

       }

      

      

       public static void main(String[] args) {

              // Creating the new object of InstanceVariablesInJava class.

              InstanceVariablesInJava objInstanceVariablesInJava = new InstanceVariablesInJava();

              System.out.println("Output of iInstanceVariables = " + objInstanceVariablesInJava.iInstanceVariables);

              //System.out.println("Compile time error "+ iInstanceVariables);

             

              // Creating the new object of InstanceVariablesInJava class.

              InstanceVariablesInJava objOne = new InstanceVariablesInJava(3000);

              System.out.println("Output of iInstanceVariables = " + objOne.iInstanceVariables);

             

              // Creating the new object of InstanceVariablesInJava class.

              InstanceVariablesInJava objTwo = new InstanceVariablesInJava(3999);

              System.out.println("Output of iInstanceVariables = " + objTwo.iInstanceVariables);

       }

}

All about Instance variables in java programming.