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Java Tutorial Overview

This Java tutorial is an introduction to help you learn Java which is a very versatile language. In this Java tutorial you will learn Java fundamentals, the various components of Java like string, classes, objects, structures, and includes practical use cases and testing as well. The topics cover aspects of Java basics including the parts of Java coding like static, void, main, loop, public and more. Learning a language that holds legacy and has been a part of building successful careers for many technical individuals worldwide is a bliss. Java is one such open-source, programming language that can let you create amazing and rational applications for business and entertainment purposes. It is certainly a versatile programming platform with a wide range of expressions, functions and methods.

Besides IT projects, Java has utility in mobile app development and gaming applications. Having Java programming skills and Java Certification, you can certainly see yourself in a challenging, competitive and growth-oriented working environment. It is an essential and vital programming language, which once mastered, let you easily and quickly understand other object-oriented platforms. Although, there had been times when Java experienced a slowdown, it instantly took on grips with Android app development.

Despite having so many languages for creating applications and web development, Java programmers are always in demand. Read below to find out the reason behind this fact:

  • Java is guaranteed to be ‘write once and run everywhere’
  • Collection of objects invoking each other’s methods
  • A case sensitive language which makes it to take different meanings for the same word typed differently.

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C++ Versus JAVA

Both are the object-oriented programming languages, but Java’s rich set of functionalities has made it overrule C++. Want to know how?

Java C++
Built-in functionality to support threads Does not support threads
Successor of C(syntax), and C++ Successor of C
Code compiled Compiled and interpreted
No database connectivity Database connectivity supported

Java has been Google’s first and top choice for Android app programming. It brings an extensive number and variety of job opportunities in multiple businesses. In present time, when every business has gone to laptop screens, desktops and mobile phones, we require a conversant and skilful technical team that can design, code and create amazing websites and functionalities for all types of audiences. Java is a popular and preferred coding language to accomplish technical tasks in the organisation.

Java outsources millions of job opportunities with higher salaries and senior positions in the top multinational companies. This Java tutorial is designed to train you on Java basics and advanced concepts. Starting with the tutorial, you will learn the essential and preliminary theories and its Installation on your system. You will be able to make a simple java program independently, with a valid output.

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Moving forward, this reference will take you through understanding Comments and Keywords, basic data types in Java, Java Array, Java String, Java Operators, Java If Else Statements, Java Loops, Java Methods, Classes and Objects. Further, it describes core concepts of Encapsulation, Inheritance, Polymorphism, Abstract class and Interface, Java Constructors, Static and Dynamic Binding. It comprises implementation of ‘this’, ‘super’, ‘final’ and ‘static’ keywords in Java and their comparisons.

Downcasting with ‘instanceof’ operator, Aggregation(HAS-A) and Composition, Java File I/O, Multithreading, Java Packages and Exception Handling are other significant topics you get familiar while enhancing your Java programming knowledge. Each topic is explained with suitable and elaborative, real -time examples that you can apply in your project.

Most interestingly, the tutorial is helpful for both, beginners as they can learn Java from the scratch using multiple examples, and for experienced Java developers to retouch their concepts and take a quick tour of conceptual insights.

Recommended Audience

  • Students and Professionals aiming to build their career as Java Developers, Software Architects, Web Designers and fetch jobs in top-paid Multinationals.
  • Entry-level and advanced programmers in IT industry.

Prerequisites

A mind bend towards logical reasoning will be beneficial.

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In this tutorial, we are going to cover the following topic:

  • Java Introduction & Installation
    • What is Java?
    • Java History
    • Features of Java
    • Installation of Java
    • Hello Java Program
      • Program Explanation
    • JVM, JDK, JRE
  • Language Fundamentals
    • Keywords
    • Identifiers
    • Data Types
    • Variables
    • Literals
    • Operators
  • Control Statements
    • Conditional Control Statements
      • If statement
      • If-else statement
      • If-else-if statement
      • Switch statement
    • Looping Control Statements
      • For loop
      • While loop
      • Do-while loop
    • Unconditional Control Statements/Jump Statements
      • break statement
      • continue statement
  • Java Array & Java String Overview
    • What is Array?
    • Array Declaration
    • Array Construction
    • Array Initialization
    • What is 1-D array ?
    • What is 2-D array ?
    • What is String?
    • String Creation
  • OOPs Concept
    • Classes and Object
    • Blocks
    • Object Creation
    • Constructors
      • This keyword
    • Inheritance
      • Single inheritance
      • Multi-Level Inheritance
      • Hierarchical inheritance
      • Multiple Inheritance
      • Hybrid Inheritance
      • Super Keyword
    • Abstraction
      • Abstract
      • Interface
    • Polymorphism
      • Static Polymorphism/Compile Time Polymorphism/Early Binding
      • Dynamic Polymorphism/Run-time Polymorphism/Late Binding
      • Method Overloading
      • Method Overriding
    • Encapsulation
      • Access Modifiers
        • Public
        • Default
        • Protected
        • private
      • Packages
      • Importing Packages
  • Java File I/O
    • What is File I/O?
      • Streams
        • Byte Input Stream
        • Byte Output Stream
        • Character Input Stream
        • Character Output Stream
  • Exception Handling
    • What is an Exception?
    • Some common problems which may cause exceptions
    • When to use Exception Handling?
    • Try and Catch Block
    • Finally Block
    • Types of Exceptions:
      • Unchecked Exception
      • Checked Exception
    • throw keyword
    • throws keyword
      • User defined Exception
  • Multi-threading

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