Getting input from Keyboard.

In this article,Getting input from Keyboard is explained in detail with examples.
"Scanner" is a class, using which, we can accept input from standard input device i.e.Keyboard.

This class is available in java.util package.Such package need to be imported in a java program.

Ex 

import java.util.*; or

import java.util.Scanner;

To use this class,we create object of this class.

Ex

Scanner sc=new Scanner(System.in); //System.in defines standard input device i.e. Keyboard.

for getting the input from keyboard the statement should be in the format shown below

String ss=sc.next(); 

String ss=sc.nextline();     (From topic Getting input from Keyboard)

Arrays in Java.

In this article,Arrays in Java is explained in detail with examples. you will come to know about what are Arrays in Java, how they are defined and how they are initialized in the Java program.
An Array is a collection of elements of same data type.

Syntax

(datatype) array name[]; //array declaration

Ex

int a[]; //no size of array should be given.

In java,while declaring an array, we don't give the size. After declaration, size is allocated to the new operator. (From topic Arrays in Java)

Syntax

arrayname=new (datatype)[size];

Ex

a=new int[5];

Examples on Arrays and ForEach Loop.

In this article,Examples on Arrays and ForEach Loop are explained in detail with examples. we will solve some examples related to the arrays and learn about Foreach Loop.
Ex
//programs related to Examples on Arrays and ForEach Loop--the sum of elements in an array.
class ArraySum
{
public static void main(String args[])
{
int a[]={11,22,33,44,55};
int i,sum=0;
for(i=0;i<5;i++)
sum=sum+a[i];

Possible Array Declarations and 2-D Arrays.

In this article,Possible Array Declarations and 2-D Arrays are explained in detail with examples.

In java we can declare an one dimensional arrays in possible ways.

int a[];

int []a;

int...a; //used only as varargs in methods

          // as last parameter.

Command line arguments

The main method takes string arrays as the input parameter.Such parameters could be passed as arguments while executing the Java program.

Syntax

Matrix addition,subtraction and Wrapper Classes.

In this article,Matrix addition,subtraction and Wrapper Classes are explained in detail with examples.

To perform these operations, the necessary and sufficient condition are both the matrices should be of same order because the operation is performed on corresponding elements from both the matrices.

Ex

//program related to Matrix addition,subtraction and Wrapper Classes-add,subtraction of a matrix.

class MatrixAddSub

{

public static void main(String args[])

{

int a[][]=new int[2][2];

int b[][]=new int[2][2];

Object Class and Constructors in Java.

In this article,Object Class and Constructors in Java are explained in detail with examples.
It is a pre-defined class in java available in "java.lang " package.

This class is a Base-class or Super-class for all our user-defined classes or pre-defined classes directly or indirectly.

This class provides runtime instance for all your classes getting executed in the memory

This class contains 7-native methods.

Native methods are those methods whose implementation is done in other languages like C and C++.

The following methods are native methods in the object class. (From topic Object Class and Constructors in Java)

Constructor and Notations in Java.

In this article,Constructor and Notations in Java are explained in detail with examples.
Like methods, Constructors can also take parameters, which acts like input values to the constructor.

Based on this, constructors are divided into two types.

Rich Dad Poor Dad.

Rich Dad Poor Dad

RICH DAD AND POOR DAD. 

This book says What The Rich Teach Their Kids About Money-That The Poor And Middle Class Do Not!. This book “Rich Dad Poor Dad is a starting point for anyone looking to gain control of their financial future.” this was written by a newspaper in USA– USA TODAY. Experience the book and develop your way of thinking. 

Enjoy the book.

Think and Grow Rich.

Think and Grow Rich

Think & Grow Rich.

The main knowledge we achieve from this book is "Whatever your mind can conceive and believe it can achieve" it was practically proved.After Reading this book put a strong goal believe it and one day you can achieve them. Anything you conceive, they can be achieved, by strongly believing them.Make a habit of reading such inspiring books and develop the changes in your personality from them.

Enjoy the book.... 

Garbage Collection.

In this article, Garbage Collection is explained in detail with examples.

1.It is an intelligent piece of an algorithm, provided by "JVM", which performs cleaning operations in the memory of java program dynamically when a java program is running for a long period of time.

2.This algorithm checks for unused memory in JVM RAM,and destroys them automatically.

3.In doing so,memory is saved by JVM and RAM becomes free, hence performance of the program increases.

4.This algorithm runs in the background of a program by JVM in memory.

5.This concept is same as that of destructors in C++.

Note

1.This automatic process can also be done by the user by calling the following method.

public void gc();

The Richest Man In Babylon.

The Richest Man In Babylon

The Richest Man In Babylon.

The Richest Man in Babylon is a book by George Samuel Clason which provides financial advice through a collection of parables set in ancient Babylon. This book gives the complete information on financial advice, how to start a business and how to make it successful. Read the book thrive the skills.

Enjoy reading...

Deriving a class and Polymorphism in java.

In this article,Deriving a class  and Polymorphism in java are explained in detail with examples.
This concept is related to inheritance.Hence we inherit properties and methods of existing class into a new class.