[1] http://www.energystar.gov/ia/home_improvement/HPwES_Utility_Intro_FactSheet.pdf. [2] http://www.homestarcoalition.org/about.html. [3] http://www.mckinsey.com/clientservice/electricpowernaturalgas/US_energy_efficiency/. There are no classes in ALL, ALL for WAP.
The biggest/largest integer that can be stored in a double without losing precision is the same as the largest possible value of a double. That is, DBL_MAX or approximately 1.8 Ã 10 308 (if your double is an IEEE 754 64-bit double). It's an integer. It's represented exactly.
In the following example, we will use a BigDecimal object to round a decimal value to two decimal places and store it in a double variable: double num = new BigDecimal(25.67534).setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue(); This line of code will store 25.68 in the variable num.he DecimalFormat class (which is part of the java.text package) is one way to format numbers. To format a number using the DecimalFormat class, a number of steps are required. In the following example, we will format a number to two decimal places. 1. Import the java.text.DecimalFormat class.