> If you run a simple java app without dependencies and only displaying "Hello world" it will run in about 1s on modern hardware.

> time for x in $(seq 1 100); do ./helloworld.py ; done

    real    0m1.240s
    user    0m0.902s
    sys     0m0.343s

That's reasonably fast.

Java for comparison:

> time for x in $(seq 1 100); do java Hw; done

    real    0m4.952s
    user    0m4.051s
    sys     0m1.071s

And I had to compile java first. Still, I expected worse from java TBH.