Write a method that computes the sum of the digitsin an integer. Use the following method header:public static int sumDigits(long n)For example, sumDigits(234) returns 9 (= 2 + 3 + 4). (Hint: Use the % operatorto extract digits and the / operator to remove the extracted digit. For instance,to extract 4 from 234, use 234 % 10 (= 4 ). To remove 4 from 234, use 234 / 10(= 2 3 ). Use a loop to repeatedly extract and remove the digit until all the digitsare extracted. Write a test program that prompts the user to enter an integer thendisplays the sum of all its digits.

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Math class and its different methods

Java math class consists of arithmetic math methods that performs basic numeric operations such as finding the maximum or minimum of two values, rounding values, logarithmic functions, square root, and trigonometric functions, etc. The Math library functions can be accessed using the header Java.lang.Math. These math methods under Java math class are for our convenience.