Question

How to sum all numbers from array of strings in Java

Answer 1

package javaapplication1;

import java.io.IOException;

public class JavaApplication1 {

    static boolean isNumber(String s) {
        for (int i = 0; i < s.length(); i++) {
            if (!Character.isDigit(s.charAt(i))) {
                return false;
            }
        }
        return true;
    }

    public static void main(String[] args) throws IOException {

        String[] arr = {"F35", "13", "150", "999", "java"};
        int sum = 0;
        for (String s : arr) {
            if (isNumber(s)) {
                sum += Integer.parseInt(s);
            }
        }
        System.out.println(sum);
    }
}


/*
                   
run:

1162
          
 */

 

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