$3-$ Sum the digits in an integer$)$: Write a method that computes the sum of the digits in 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 $\%$ operator to 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 $234/10(=23).$ Use a loop to repeatedly extract and remove the digit until all the digits are extracted. Write a test program that prompts the user to enter an integer then displays the sum of all its digits.Write the code here and attach screenshots of the output using some sample data as an example.public class Helloworld $\{$public static void main$($String$[]$args$)\{$Scanner input $=$ new

Scanner$($

System.in$)$;

System.out.print$("$Enter an

integer: $")$;

int number $=$ input.nextInt$()$;

System.out.println$("$The sum of

the digits is: $"+$ sumDigits$($number$))$;

$\}$

public static int sumDigits$($int n$)\{$

int sum $=0$;

while $(n,0)\{$

sum $+=n\%10$;

n $\frac{?}{?}=10$;$4-$Count occurrence of numbers$)$: Write a program that reads the integers between $1$ and $50$ and counts the occurrences of each.Assume the input ends with $0.$ Here is a sample run of the program: