Homework Help

[EZ-Ed]

Hello everyone,
I'm having issues with one of my programs and need some help. The purpose of the program is to summarize digits into an int using a method. My code works for positive numbers however, when I input a negative number, the result is positive. I've tried several if statements but cannot seem to get it working. Any suggestions? Here is my code:

public class Ex5_2SumDigit {
  public static void main(String[] args) {
  
  String integerString;
  int integer;
  	integerString = JOptionPane.showInputDialog("Please enter an integer: ");
	integer = Integer.parseInt(integerString);
  

   JOptionPane.showMessageDialog (null, "The sum of digits for " + integer +
      " is " + sumDigits(integer));
  }

  public static int sumDigits(long n) {
    int temp = (int)Math.abs(n);
    int sum = 0;
	
  		while (temp != 0) {
  		int remainder = temp % 10;
      sum += remainder;
      temp = temp / 10;
   	 
	 }
	 	
    return sum;
  }

[Diargg]

What does

int temp = (int)Math.abs(n);

do to negative numbers?

[shamssss.169]

Its because of the abs() method your code is not working for negative numbers try the following code for SumDigits()
public static int sumDigits(long n) {
int temp = (int)(n);
int sum = 0;

while (temp != 0) {
int remainder = temp % 10;
sum += remainder;
temp = temp / 10;

}

return sum;

[EZ-Ed]

I got my program to work, I was simply just overlooking a very simple mistake. I'm not sure why I put Math.abs there in the first place. Thanks for the help.