Construct a java class that includes the static mthods below:

method findMin (int return type) that return the index of the minimum value in the array.

method findMax (int return type) that return the index of the maxmum value in the array.

method mean (double return type) that return the statistical mean of the values in the array.

method pouulate (No return type) that populats the arry with a series of integer values between 0 and 100(inclusive) that are randomly generated.