I just bombed an interview and made pretty much zero progress on my interview question. Given a number, find the next higher number which has the exact same set...
I want to check if a string contains only digits. I used this: var isANumber = isNaN(theValue) === false; if (isANumber){ .. } But realized that it also allows...
What I would like is a method to convert a double to a string which rounds using the half-up method – i.e. if the decimal to be rounded is...
Use setRoundingMode, set the RoundingMode explicitly to handle your issue with the half-even round, then use the format pattern for your required output. Example: DecimalFormat df = new DecimalFormat("#.####");...