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Core Java - Interview Questions and Answers for 'Decimal' - 4 question(s) found - Order By Newest

 Q1. Have you ever faced problems with rounding decimal places and what were the reasons ? Core Java2018-05-19 07:52:17

Ans. 1. The problem with double (x*100)/100 doesn't return exact x but few fractions lesser than x and then if you are using floor rounding , it makes a big difference

2. Rounding only after getting a result vs rounding each outcome of 2 operand make difference

3. Usage of inappropriate Rounding mode and Rounding scale.

4. Results with double and BigDecimal

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   Like      Discuss      Correct / Improve     BigDecimal  double  round  decimal


 Q2. Which of the following data type you will prefer to store price - BigDecimal or Double ?
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Ans. BigDecimal if memory and Performance is not critical concern, otherwise double.

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 Q3. What is the advantage of BidDecimal over Double ?Core Java2018-04-10 15:04:39

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 Q4. What is the difference between round and scale method of BigDecimal ?Core Java2018-05-19 07:54:45

Ans. Round method would round it to integer places irrespective of if it's decimal places or not whereas scale would only round the decimal places.

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   Like      Discuss      Correct / Improve     BigDecimal  round  scale




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