I'm getting an error while trying to format a string number: Argument type 'String' does not match the type of the format specifier '%.2f'. The String is created by: String cost = Double.parseDouble((Double.parseDouble(".04") * aLONGTYPEnumber * 24)); java Share Improve this ques...
String.Format("{0:#.#}", 0.0); // "" 1. 2. 3. 4. 用空格对齐数字 右对齐:在”,“后不变。其次是数量的空格,例如类型逗号“0,10:0.0”(可以使用String.Format方法,在double.ToString方法不是)。左对齐:在”,“后,用"-" [C#] String.Format("{0,10:0.0}", 123.4567); // " 123.5" Str...
4.2 类实现 以下是BigDecimalUtil类的实现示例: importjava.math.BigDecimal;importjava.text.DecimalFormat;publicclassBigDecimalUtil{privateBigDecimalnumber;publicBigDecimalUtil(StringnumStr){this.number=newBigDecimal(numStr);}publicStringtoString(){returnthis.number.toString();}publicStringformatToTwoDecimalPlaces(...
public void localizedFormat(double value,Locale loc ) { NumberFormat nf = NumberFormat.getNumberInstance(loc); DecimalFormat df = (DecimalFormat)nf; df.applyPattern("###,###.00"); String output = df.format(value); } This function should give you the required formatting. Share...
Java provides the following three ways to display double in 2 decimal places: Using DecimalFormat ("0.00") Using String.format() Method ("%.2f") Using BigDecimal Let's discuss the above ways one by one. Using DecimalFormat JavaDecimalFormatis a concrete subclass of the NumberFormat class that...
🏆 BONUS – How to round each item in a list of floats to 2 decimal places in Python? 💡 Solution 1: Using a round() 💡 Solution 2: Using String formatting ❖ Conclusion ❖ Problem Formulation In this article, you will learn how to format a floating-point value and generate a...
即float和double）都有表示错误。如果你想保持更精确，不要转换为float，如果可能的话也避免使用double。
即float和double）都有表示错误。如果你想保持更精确，不要转换为float，如果可能的话也避免使用double。
String.format() method Math.round() methodThere are multiple ways to round a double or float value into 2 decimal places in Java. You can use one of the following methods: The DecimalFormat class The BigDecimal class The String.format() method The Math.round() method Note: If you are f...
To round a number up to two decimal places in Java, you can use the Math.ceil method and multiply the number by 100, then divide the result by 100.