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Java String Exercises: Return the sum of the digits present in the given string

Java String: Exercise-95 with Solution

Write a Java program to return the sum of the digits present in the given string. If there is no digits the sum return is 0.

Sample Solution:

Java Code:

import java.util.*;
public class Main
{
public int sumOfDigits(String stng) 
{
  int l = stng.length();
  int sum = 0;
  for (int i = 0; i < l; i++) 
  {
    if (Character.isDigit(stng.charAt(i))) 
	{
      String tmp = stng.substring(i,i+1);
      sum += Integer.parseInt(tmp);
    }
  }
  return sum;
}


public static void main (String[] args)
    {
      Main m= new Main();
      String str1 =  "ab5c2d4ef12s";
      System.out.println("The given string is: "+str1);
      System.out.println("The sum of the digits in the string is: "+m.sumOfDigits(str1));
	  }
}

Sample Output:

The given string is: ab5c2d4ef12s
The sum of the digits in the string is: 14

Pictorial Presentation:

Java String Exercises: Return the sum of the digits present in the given string.If there is no digits the sum return is 0

Flowchart:

Flowchart: Java String Exercises - Return the sum of the digits present in the given string.If there is no digits the sum return is 0

Java Code Editor:

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Java: Tips of the Day

Count the number of occurrences of a char in a String:

int count = StringUtils.countMatches("a.b.c.d", ".");

Ref: https://bit.ly/2OTy6sG