More than 3000 questions in repository. There are more than 900 unanswered questions. Click here and help us by providing the answer. Have a video suggestion. Click Correct / Improve and please let us know.
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
Help us improve. Please let us know the company, where you were asked this question :
Ans. They all does the same task i.e to compute statistical information on the stream of data. They differ by the way they store the statistical information as they expect a different data type of the values being used.
IntSummaryStatistics and LongSummaryStatistics expect non floating point values and hence stores the statistical information like min,max and sum as non floating values ( int or long ) whereas DoubleSummaryStatistics stores these information as floating value.
Help us improve. Please let us know the company, where you were asked this question :
Q8. Math.round method rounds the decimal to an integer by stripping off the decimal places. How can we use the same method to keep only 2 decimal places
For example -
Math.round(12.3456) will return 12. What should we do to get 12.34 without using any other class or method.