将以下数字格式化为字符串的最佳方法是什么?
What is the best way to format the following number that is given to me as a String?
String number = "1000500000.574" //assume my value will always be a String
我希望这是一个字符串,其值为:1,000,500,000.57
I want this to be a String with the value: 1,000,500,000.57
我怎样才能这样格式化它?
How can I format it as such?
你可能想看看 DecimalFormat
类;它支持不同的语言环境(例如:在某些国家/地区会被格式化为 1.000.500.000,57
).
您还需要将该字符串转换为数字,这可以通过以下方式完成:
You also need to convert that string into a number, this can be done with:
double amount = Double.parseDouble(number);
代码示例:
String number = "1000500000.574";
double amount = Double.parseDouble(number);
DecimalFormat formatter = new DecimalFormat("#,###.00");
System.out.println(formatter.format(amount));
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