Which programming language do IT companies use more, java or c# or c++?

Answer 1

Most In-Demand Programming Language is Java(answer to your question)

but it is the other programming languages list (listed according on their demand)
1. SQL. It's no surprise SQL (pronounced 'sequel') tops the job list since it can be found far and wide in various flavors. ...
2. Java. The tech community recently celebrated the 20th anniversary of Java.
3. JavaScript
4. C#
5. C++
6. Python
7. PHP
8. Ruby on Rails
9. iOS/swift

Answer 2

Java and C#

Answer 3

Most common are java and c++... But i see python very often too

Answer 4

All three have the equal importance because the concepts from them make you to introduce more coding platforms such as visual studio, android studio, xamarin studio etc.,