Java BigDecimal: 计算字符串列表的总和并保留两位小数

List<String> energyList = new ArrayList<>(); // Assuming energyList is populated with strings

BigDecimal sum = BigDecimal.ZERO; for (String energy : energyList) { BigDecimal energyValue = new BigDecimal(energy); sum = sum.add(energyValue); }

sum = sum.setScale(2, RoundingMode.HALF_UP); System.out.println(sum); // Prints the sum with two decimal places