java programming

Write a declaration that populates an array with the following numbers 42, 91, 65, 40, 16, 7, 42 then prints them out in the following format: [ao, a1, a2, , an] and finally prints the alternating sum on a new line- that is, if the array index is even add the value to the total, or if the array index is odd subtract the value from the total For example: Result [42, 91, 65, 40, 16, 7, 42] 27