Which course is very useful in the future?

Question

Best , Good or Wrost

Answer 1

This question (just like others) are based on opinion. Different people will reply with different opinions. Bottomline though all of these languages are incredibly useful. However, the value of how useful they are to you depends on various aspects.
• Do you want to develop mobile apps?
• Servers & websites?
• Desktop applications?
• Games?

As a software developer (ad especially software engineer) you're more valuable to a company if you show many traits (or experience) in various languages.