java BigDecimal的格式化

NumberFormat currency = NumberFormat.getCurrencyInstance(); //建立货币格式化引用

NumberFormat percent = NumberFormat.getPercentInstance();  //建立百分比格式化引用

percent.setMaximumFractionDigits(3); //百分比小数点最多3位

BigDecimal loanAmount = new BigDecimal("15000.48"); //贷款金额

BigDecimal interestRate = new BigDecimal("0.008"); //利率  

BigDecimal interest = loanAmount.multiply(interestRate); //相乘

System.out.println("贷款金额:\t" + currency.format(loanAmount));

System.out.println("利率:\t" + percent.format(interestRate));

System.out.println("利息:\t" + currency.format(interest));