Java is #2 / #3 in September 2020 📎
According to TIOBE Index for September 2020: C is #1 (15.95%,+0.74%), Java is #2 (13.48%, -3.18%) and Python is #3 (10.47%,+0.59%).
The most popular JVM-based language is Groovy with #17 and -0.52%, 0.99% [Source: TIOBE Index for January]
On github (number of pull requests) Java is #3: 10.731% (+0.250%), after Python: 16.108% (-1.694%) and JavaScript 18.789% (-1.133%). C is #10 3.320% (+0.130%).