Java Program to find Sum of Digits
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Find Sum of Digits
In the following example, we will add all the digits in the given number (12345) for just one time.
For example, 12345 = 1 + 2 + 3 + 4 + 5
i.e., 12345 = 15
Example
Java Compiler
public class myClass
{
public static void main(String[] args)
{
int num = 12;
int copyNum = num;
int total = 0;
// Add Each digit from last digit
while(copyNum != 0)
{
total += copyNum % 10;
copyNum = copyNum / 10;
}
// result
System.out.format("The sum of digit %d: %d", num, total);
}
}
Output
The sum of digit 12: 3
Find Sum of any given Digits
In the following example, we will find the sum of any given digits.
Example
Java Compiler
import java.util.Scanner;
public class myClass
{
public static void main(String[] args)
{
Scanner reader = new Scanner(System.in);
System.out.print("Enter a (int) number: ");
int num = reader.nextInt();
int copyNum = num;
int total = 0;
// Add Each digit from last digit
while(copyNum != 0)
{
total += copyNum % 10;
copyNum = copyNum / 10;
}
// result
System.out.format("The sum of digit %d: %d", num, total);
}
}
Output
The sum of digit 451: 10
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