Mandelbrot & Julia sets are graphically represented using java swings.
Usage:
java Fractal Mandelbrot x_start x_end y_start y_end iterations
java Fractal Julia x y iterations
Example: java Fractal Mandelbrot -0.5 0.5 -1 1 1000 java Fractal Julia 1 0.5 1000
or for default values
java Fractal Mandelbrot java Fractal Julia