Before starting, I shared my experience, when I first entered the industry, I met a good company and **, gave me the opportunity, from 3k salary to 18k in a year, I ** gave some electrical engineer learning methods and materials, let me continue to improve myself, thank you for helping me, as everyone needs me as much as I can share information in the comment area deduction 888 or private 888
Theoretically, C+ and J**A are fine, depending on which one you prefer.
But in fact, there are more or less jobs that can be related to mechanical majors, and there are more and more C++, such as industrial control, medical equipment, robots, national defense and military industry, automatic driving, etc., which can be related to machinery, and more C++, as well as the CAD CAM industry, which is also related to C++ and machinery.
If you apply for a software-only job, it will be more difficult than the above, because it means that all the professional knowledge is lost. I myself learned C++ as a mechanic to do the Internet, which is pure software.
If you prefer J**A on the Internet, choose J**A. Otherwise, choose C++, because there is a wider choice for mechanical majors.
Whether you choose J**A or C++ for mechanical majors, it is very volumetric, but choosing J**A means that your choice will be much smaller when you apply for a job. 