数字
BigDecimal public class AmountCalculated {private static final DecimalFormat df new DecimalFormat("#.##");public static double add(double a, double b) {double value new BigDecimal(a).add(new BigDecimal(b)).doubleValue();return Double.valu…
To enable Developer Options on your Samsung SM-A5560 (or any Samsung Galaxy phone), follow these steps: Open Settings: Go to the main Settings app on your phone. Scroll to “About Phone”: Scroll down and tap on “About Phone”. Select “Software Informa…