What is Java?

(For the intro go to my steemit a/c @amaman0801 )
Java was designed to have many similarities to C++ but is easier to use and learn. It was one of the first programming languages to fully-embrace object-oriented programming, and because of this it quickly gained a large following.
Today, Java is popular for programming a wide range of solutions, with millions of websites using Java for web applets and applications. Popular websites such as LinkedIn, Twitter, and eBay use Java extensively, and Google has adopted Java as the main language for coding Android apps — any developer using Google’s Android API for creating apps will be writing in Java.
Recently, Java has also become a highly popular tool for Internet of Things (IoT) development because it delivers secure, portable code that can be used anywhere.
Part of this popularity is because Java source code is compiled into bytecode, which can then be run on any server or client computer that has a Java virtual machine installed. This means Java programs are platform independent — they work on many different operating systems including Windows, iOS, and Linux, as well as popular IoT operating systems such as RIOT, Contiki, and FreeRTOS.
In comparison, languages like C++ or Visual Basic compile code into a binary file, which is specific to a platform. This means a program written in C++ for iOS cannot be used as-is on a Windows machine.