Java please

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You are going to develop a program for displaying statistics of a classroom Get the student number from the user. According to this number, create an array of random grades (between 0-100, int or double up to you! Display the elements in a comma sperated list. As a last step, call displaystatistics method to print the average and standard deviation of these grades, HINT: standard deviation = 2(x-w?, where is the average and is the number of grades. 1-1 no IMPORTANT: you can ONLY use Math sqrt() and Math.pow() as a pre-defined method