How to do addition with BigDecimal values?

Question

I have list of web element there are totally 3 values in list of web element I want to do addition of that values in BigDecimal I have return following code

Public BigDecimal calculatebigdecimal{
List<WebElement> elementValues = driver.findElements(By.xpath(“xpath to element”));
String values;
BigDecimal elementValueTotal= null;
BigDecimal sum = null;
for(int i =0; i<elementValues.size();i++)
{
values = elementValues.get(i).getText();
elementTotal = new BigDecimal(values);
elementTota.plus();
}
return elementTotal;

I try to apply the same logic but still confused and not getting the correct answer — Snehal Thakkar, Sep 14 '18 at 15:02

score 1 · Answer 1 · answered Sep 14 '18 at 15:25

1

Replace the ArrayList with appropriate elements from Web Site.

  public BigDecimal calculatebigdecimal() {
    List<String> elementValues = new ArrayList<String>();
    elementValues.add("1");
    elementValues.add("2");
    elementValues.add("3");
    String values;
    BigDecimal elementValueTotal = new BigDecimal(0);

    for (int I = 0; I < elementValues.size(); I++) {
        values = elementValues.get(I);
        elementValueTotal = elementValueTotal.add(new BigDecimal(values));

    }

    System.out.println(elementValueTotal);
    return elementValueTotal;
}

answered Sep 14 '18 at 15:25

Ashraff Ali Wahab

1,088
9
19

I am getting the text from web element so can you clarify it how can I do addition of that string values ? @Ali – Snehal Thakkar Sep 14 '18 at 15:56
BigDecimal accepts String as depicted in the example above. – Ashraff Ali Wahab Sep 14 '18 at 16:03
Ah so how to avoid duplicating and perform the addition? – Snehal Thakkar Sep 14 '18 at 16:06
Convert List to Set which will remove duplicates for you and perform addition. Research in SO how to convert List to Set. – Ashraff Ali Wahab Sep 14 '18 at 16:08

Guilherme Alencar · Answer 2 · 2018-10-04T16:34:03.123

0

Bigdecimal is immutable, so you gotta reassign the element. See:

elementTotal = elementTotal.add(BigDecimal.ONE);

Remember to assign elementValueTotal to 0 before the for iteration.

edited Oct 04 '18 at 16:34

answered Sep 14 '18 at 15:34

Guilherme Alencar

1,243
12
21

It is adding one to my current value I’m not getting the total for example if my value is 10 this code make it 11. It is not the correct answer @Gui Alencar – Snehal Thakkar Sep 14 '18 at 15:45
So you want to add `elementTotal = elementTotal.add(new BigDecimal(values));` – Guilherme Alencar Sep 14 '18 at 15:54
It’s not working also @GuiAlencar – Snehal Thakkar Sep 14 '18 at 16:05
The texts you are getting are String numbers ? like "2" or "6" ? – Guilherme Alencar Sep 14 '18 at 16:25
I’m getting string like 22.89 or 35.00 like that – Snehal Thakkar Sep 14 '18 at 16:29
Did you assign elementValueTotal to 0 before the for iteration ? – Guilherme Alencar Sep 14 '18 at 16:30
Yeah that’s the problem I haven’t assigned the value on the declaration section. I keep it null instead of 0.00 so I assign it to 0.00 and its working as expected – Snehal Thakkar Sep 14 '18 at 18:13
I updated the answer according to our discussion – Guilherme Alencar Oct 04 '18 at 16:34
Thanks@GuiAlencar – Snehal Thakkar Oct 04 '18 at 16:47

How to do addition with BigDecimal values?

2 Answers2