What is the fastest way to draw pixels in Java

Question

I have some code that generates particles at random locations, and moving in random directions and speed.

Each iteration through a loop, I move all the particles, an

Answer 1

I think the direct pixelmanipulation via the databuffer of the bufferedimage is the fastest way to draw something with the standard-library because you reduce the graphics object overhead to a minimum.

But as Perception said if you want to display 100'000 particles or more you should consider the GPU programming with OpenCl.

LWJGL for a small and easy to use Java-OpenGL/CL/AL binding