JAVA

                                                              

What is JAVA?

Java is a programming language that produces software for multiple platforms. It is the most popular programming language for Android smartphone applications, standalone desktop applications and web applications distributed among clients and servers in a network. Java is strictly an object oriented programming language. 

A Java program is compiled down to bytecode by the Java compiler. The bytecode can be interpreted by Java virtual machine, which runs on multiple platforms, Mac, PC or Unix computers into machine code. JIT compiler compiles bytecode into native machine code “just in time” to run, thus improving the performance of JVM.

 Main features of Java

 1) Simple

 Java is easy to learn and its syntax is quite simple, clean and easy to understand.The confusing and ambiguous concepts of C++ are either left out in Java or they have been re-implemented in a cleaner way.

 2) Object Oriented

In java everything is Object which has some data and behaviour. Java can be easily extended as it is based on Object Model.

3) Robust

Java makes an effort to eliminate error prone codes by emphasizing mainly on compile time error checking and runtime checking. But the main areas which Java improved were Memory Management and mishandled Exceptions by introducing automatic Garbage Collector and Exception Handling. 

4) Platform Independent

Unlike other programming languages such as C, C++ etc which are compiled into platform specific machines. Java is guaranteed to be write-once, run-anywhere language. 

5) Secure 

When it comes to security, Java is always the first choice. With java secure features it enable us to develop virus free, temper free system. Java program always runs in Java runtime environment with almost null interaction with system OS, hence it is more secure. 

6) Multi Threading

Java multithreading feature makes it possible to write program that can do many tasks simultaneously. Benefit of multithreading is that it utilizes same memory and other resources to execute multiple threads at the same time, like While typing, grammatical errors are checked along. 

7) Architectural Neutral 

Compiler generates bytecodes, which have nothing to do with a particular computer architecture, hence a Java program is easy to intrepret on any machine.

8) Portable 

Java Byte code can be carried to any platform. No implementation dependent features. Everything related to storage is predefined, example: size of primitive data types 

9) High Performance 

Java is an interpreted language, so it will never be as fast as a compiled language like C or C++. But, Java enables high performance with the use of just-in-time compiler. 

Uses of Java

 1.Android app

Java is the standard language of Android app development, which means the fastest performance and most native experience. 

2.Desktop Apps 

Java is probably the easiest way to create cross-platform software these days. The Swing UI toolkit used to be an alternative to Java developers, but if you’re starting now, skip it and learn JavaFX or SWF instead.

3.Enterprise systems 

High-volume data processing industries (such as banking, financial trading, etc.) use Java for non-legacy systems, because it is fast, portable, easy to maintain, and are less prone to types of catastrophic bugs in low-level languages. 

4.Embedded Systems 

Some areas of embedded space now depend on Java. Examples of embedded systems include digital watch, factory controller, traffic lights, microcontrollers, hybrid vehicles, and more recently, Internet of Things devices. 

5.Scientific research 

Java is mostly used for complex tasks like natural language processing and artificial intelligence. Data processing, computing, modeling, and simulations are often carried out in languages such as MATLAB and Python. 

Future of Java

From laptops and mobile phones to gaming consoles and scientific computers, Java is everywhere today. Recent reports from Oracle reveal that there are over 9 million Java developers all over the world. Thus, Java developers can be assured of a lucrative professional career ahead owing to Java’s strong presence in the enterprise.

Some big companies that uses Java:

 1) Google
 2) Spotify 
 3) Netflix
 4) Flipkart
 5) Uber
 6) Wipro
 7) Amazon
 8) Pinterest
 9) Twitter 
 10) HCl