topic Re: Format value to two decimal places without rounding in Talend Studio

Format value to two decimal places without rounding

RA6 — Sat, 16 Nov 2024 08:19:11 GMT

Hello all,

I want to format the below value to two decimal places without rounding it.

Example:

ColumnA	ColumnB	Result
171.456	2.321	169.135
25.45856	10.5426	14.91596

For info, Column A, B, and result is of type String and this result datatype in my output to remain as String.

My expected output should be 169.13 and 14.91

I have tried with the two option below:

String.format("%.2f", (Double.parseDouble(ColumnA) - Double.parseDouble(ColumnB)))

String.format("%.2f", (new BigDecimal(Var.var2).subtract(new BigDecimal(Var.var3))))

But it is rounding the value to: 169.14 and 14.92

Also, i want to know what is the difference between Big Decimal and Double? What should i use in my situation?

Thank you for your help.

Best regards,

Asadasing

Re: Format value to two decimal places without rounding

vboppudi — Wed, 02 May 2018 16:25:53 GMT

Hi,

Please try below.

Regards,

Re: Format value to two decimal places without rounding

RA6 — Thu, 03 May 2018 08:45:48 GMT

Hello Veeranjaneyulu,
Thank you for the solution. It works.
However, do you know the difference between bigdecimal and double?

How can you determine the usage of one of these?\

Regards,
Asadasing

Re: Format value to two decimal places without rounding

RA6 — Mon, 04 Jun 2018 11:45:52 GMT

@vboppudi

Tried your solution and encountering a blocking error.
Please see link below:
https://community.talend.com/t5/Design-and-Development/Tmap-Error-NumberFormatException-For-input-string/m-p/122546#M77203

Thank you for your help.

Re: Format value to two decimal places without rounding

manodwhb — Mon, 04 Jun 2018 13:42:41 GMT

@asadasing,try with below way and let me know,if you are still facing issue.

row3.newColumn2==null | row3.newColumn2.equals("")?"0"row3.newColumn2.replace(",",".")).replace(" ","")