Only program the milestone2 & 4. Please separate the two of the picture programs into two files.

And this is a part of main

In the following drawings, the number of line segments in each "fan", also called NUM_STEPS below, is a parameter that the user specifies through JoptionPane. showInputDialog) and your program should validate and insist that the user specifies NUM_STEPS to be between 2 and 50 In the following drawings, the number of line segments in each "fan", also called NUM_STEPS below, is a parameter that the user specifies through JoptionPane. showInputDialog) and your program should validate and insist that the user specifies NUM_STEPS to be between 2 and 50