2017 - Step by Step JAVA

What are the basic elements and how to use them in C?

On December 3, 2017August 28, 2022 By admin

Identifiers: All the words that we will use in c are keywords or identifiers. keywords are predefined and can’t be changed by the users, While identifiers are used to give names to entities likes variables, arrays, functions and etc. There are some rules naming identifiers as: The name should consist […]

What is and how to use the Constructors in JAVA?

On September 24, 2017August 28, 2022 By admin

Why constructor is needed? It can be a slow process to initialize all variables of a class, each time when an object is created. Because the requirement of initialization is very common, JAVA allows objects to initialize themselves when they are created. This automatic initialization is performed through the use […]

What is and how to use classes in JAVA?

On August 9, 2017August 28, 2022 By admin

Classes are blueprint of any real entity in Java. A class contains of two types of members; a data or variable and another is method or function. Variable defined within a class are called as instance variables because each instance of the class (object of class) contains its own copy […]

Arrays

On June 16, 2017February 14, 2018 By admin

An array is a group of similar-typed variable that are referred by a common name. A specific element in an array is accessed by its index. An array may have one or more dimensions. One Dimensional Arrays: The general form of a one dimensional array declaration is as: type variable-name[]; […]

Type Conversion and Casting

On June 3, 2017February 14, 2018 By admin

There are two types of conversion in Java as: Implicit conversion Explicit conversion Implicit Conversion: Implicit conversion is also known as automatic conversion. When one type of data is assigned to different type of variable then automatic type conversion will take place if the following conditions are met. both type […]

Data Types and Variables

On May 21, 2017February 14, 2018 By admin

The Primitive Type: There are eight primitive types of data : byte, short, int, long, char, float, double and boolean. These can be put in four categories as: Integers : This group includes bytes, short, int and long , all of these are used for whole valued signed integer. Floating […]

How to use control statements in Java and their example

On May 13, 2017December 16, 2021 By admin

There are mainly three categories of control statement in Java as: Selection Statement Iteration Statement Jump statement § Selection Statement: There are two selection statements as: if statement: It is conditional branch statement. It can be used to route program execution through two different paths. Syntax: if(condition) { statement; […]

Simple Example of Java Program

On April 25, 2017December 16, 2021 By admin

class Example { //program begins here. public static void main(String args[]){ System.out.println(“Hi, This is my first Java program.”); } } This is a simple program to print a line “Hi, This is my first Java program.” There are some key points that should be known to you: Here ‘class’ is […]

What is the use of OOPs Concepts?

On April 20, 2017December 11, 2021 By admin

Object oriented programming (OOPs) is based on concept of “Objects”. Object : Object is real entity of class, or we can say it instance of class. object is collection of attributes and behavior. For example, a dog is an object and its attributes are like as color, name, breed and […]