How to remove unwanted zeros from decimal number in Java (Selenium).But if last digit is not 0 then it should be displayed

Question

I am querying lot of fields from Teradata and validating with the values displayed in UI using Selenium (Java). All my fields have only 3 decimal points.

For Eg,Number in DB = 4.199 is displayed as 4.199 in UI and Number in DB = 4.190 is displayed as 4.19 in UI and Number in DB = 4.100 is displayed as 4.1 in UI

When I assert, 4.190 and 4.19 are considered different by Selenium. I have lot of fields of this kind.How can I solve this?

Is there any other function like cast or round that can format the data in the way I want?

Answer 1

The best option you have is this:

boolean areTheyEqual = new BigDecimal(a.toString()).compareTo(new BigDecimal(b.toString())) == 0;

This way you are converting them into BigDecimals, then making use of the compareTo method which disregards scaling (so 1.2 is the same as 1.20).

Answer 2

I usually use BigDecimal for storing decimal when I want to do such manipulations. Here is an example, using the stripTrailingZeros() method:

BigDecimal b = new BigDecimal("2.210");
System.out.println(b.stripTrailingZeros());
//will print 2.21

You can always convert the values to BigDecimal and then check for equality, show them to UI formatted as you want, etc.

Answer 3

When using Selenium webElement.getText() the return is a String and when you comp 2.19 with 2.190 both are different so Assert will fail.

Can we try converting the String to Integer and perform the Assert action.

int num = Integer.parseInt(webElement.getText());

now the stored value in num is type Int so you can assert with another Int.

Else you can go with the suggestion above ( Use of BigDecimal)

Answer 4

As big decimal is not working for me I was searching for a regex and found it in the below link Remove trailing zero in Java

Its working perfectly.