Which language is best, C, C++, Python or Java?
If you are writing an operating system, I suggest you use C.
If you are writing a very complex application where execution speed is extremely important, I suggest you use C++.
If time to market is key, but execution speed is not important, I suggest you use python.
If your boss told you: "do it in Java or you are fired" I suggest you use Java and look for a better workplace.