Does knowing java make learning C/C++/Python easier? Which should I learn first?

I have read that Java is a combination of both C and C++. I am an aspiring programmer and am currently trying to decide which language to learn first.

I have comprehensive tutorials/learning material on Java, C++ and Python. I am almost leaning towards Java, since my Python course seems to demand prior knowledge of programming (In the video course, the narrator uses various terms assuming the learner knows).

Out of these three, which should I start with?