Java List Sum sumListItems(List list)

Description

sum List Items

License

Open Source License

Declaration

public static String sumListItems(List list) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.List;

public class Main {
    public static String sumListItems(List list) {
        double sum = 0d;
        for (int i = 0; i < list.size(); i++) {
            String value = (String) list.get(i);
            if (value == null || "".equals(value))
                continue;
            sum = sum + Double.parseDouble(value);
        }//from   w ww .j  a v  a 2 s . co  m
        return String.valueOf(sum);
    }

    public static String valueOf(char c) {
        char ac[] = new char[1];
        ac[0] = c;
        return new String(ac);
    }

    public static String valueOf(double d) {
        return Double.toString(d);
    }

    public static String valueOf(float f) {
        return Float.toString(f);
    }

    public static String valueOf(int i) {
        char ac[] = new char[11];
        int j = ac.length;
        boolean flag = i < 0;
        if (!flag)
            i = -i;
        for (; i <= -10; i /= 10)
            ac[--j] = Character.forDigit(-(i % 10), 10);

        ac[--j] = Character.forDigit(-i, 10);
        if (flag)
            ac[--j] = '-';
        return new String(ac, j, ac.length - j);
    }

    public static String valueOf(long l) {
        return Long.toString(l, 10);
    }

    public static String valueOf(Object obj) {
        return obj != null ? obj.toString() : "";
    }

    public static String valueOf(boolean flag) {
        return flag ? "true" : "false";
    }

    public static String valueOf(char ac[]) {
        return new String(ac);
    }
}

Related

1. sumCreditList(List list)
2. sumDifferences(List a, List b)
3. sumDouble(List list)
4. sumInteger(List list)
5. sumIntegers(List values)
6. sumLog(List Q)
7. sumLong(List list)
8. sumOfSquares(List samples)
9. sumOfSquares(List list)