double四舍五入并保留两位小数的方法

1.只要输出结果
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double x1 = 0.026;
System.out.println(String.format("%.2f", x1));


2.数据转换
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//方案一:
get_double = (double)(Math.round(result_value*100)/100.0)
//方案二:
DecimalFormat df = new DecimalFormat("#.##");
get_double = Double.ParseDouble(df.format(result_value));
//方案三:
get_double = Double.ParseDouble(String.format("%.2f",result_value));
//方案四:
BigDecimal bd = new BigDecimalresult_value();
BigDecimal  bd2 = bd.setScale(2,BigDecimal  .ROUND_HALF_UP);
get_double = Double.ParseDouble(bd2.ToString());




3.只保留两位小数(不含四舍五入)
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double d = 13.4324;
d=((int)(d*100))/100;