Java is one of the most popular programming languages in the world, regularly used by nine million developers. The language is relatively easy to learn, and yet it can be used to write
software of any complexity.
A Java developer develops the server side (back-end) - the core of any service we access over the Internet.
Banking programs, web services, Android applications and many more are written in Java. All high-traffic services work in Java because it can provide secure, stable and fast system operation.
"Sber, Alfa, Aliexpress, Intel, Google, Netflix, Spotify - all are written in Java.
Often small companies switch to Java as they grow, when the need for high speed and stability arises. Twitter, for example.