You wouldn't write a web frontend in Java (not anymore), you wouldn't write your Tensorflow code in Java, nor your kernel module or device driver.
You still use the right tool for the job. Java is not always that. Also "right" should factor in your existing expertise, team culture, organizational roadmaps, etc.
You still use the right tool for the job. Java is not always that. Also "right" should factor in your existing expertise, team culture, organizational roadmaps, etc.