例:“500”---》“500.00” , “50.256”----》"50.25"
String price_CNY =
"5";
Double cny = Double.
parseDouble(price_CNY)
;//转换成Double
DecimalFormat df =
new DecimalFormat(
"0.00")
;//格式化
String CNY = df.format(cny)
;
System.
out.println(CNY)
;//5.00
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