doublerandomNumber=random.nextDouble()*100;// 生成 0.0 到 100.0 的随机数doubletwoDecimalNumber=Math.round(randomNumber*100.0)/100.0;// 四舍五入,保留两位小数 1. 2. 步骤4: 格式化输出为两位小数 为了确保输出的格式始终是两位小数,我们可以使用String.format()方法。 StringformattedNumber=String.format("...
System.out.println(df2.format(n)); NumberFormat nf3 = NumberFormat.getNumberInstance(deLoc); DecimalFormat df3 = (DecimalFormat)nf3; df3.applyPattern(pattern); System.out.println(df3.format(n)); } In the program, we print a value in three different locales. The grouping and the decimal ...
*/ private static String getChineseDecimal(int[] decimals) { StringBuffer chineseDecimal = new StringBuffer(""); for (int i = 0; i < decimals.length; i++) { // 舍去3位小数之后的 if (i == 3) break; chineseDecimal.append(decimals[i] == 0 ? "" : (NUMBERS[decimals[i]] + ...
JAVA float double数据类型保留2位小数点5种方法 2015-08-28 10:51 −/** * Java 两个整数相除保留两位小数,将小数转化为百分数 * java中,当两个整数相除时,由于小数点以后的数字会被截断,运算结果将为整数,此时若希望得到运算结果为浮点数,必须将两整数其一或是两者都强制转换为浮点数。 例如: (float)a...
你需要在你的DecimalFormat上设置语言环境。您可以使用NumberFormat.getInstance(Locale locale)方法完成此操作...
NumberFormat ddf1=NumberFormat.getNumberInstance() ; ddf1.setMaximumFractionDigits(2); String s=ddf1.format(x) ; System.out.print(s); } } import java.text.*; DecimalFormat df=newDecimalFormat(".##");doubled=1252.2563; String st=df.format(d); ...
7 ways to format float to 2 decimal places in java Using BigDecimal Using Math.round(double*100.0)/100.0 Using Apache common Math Let’s understand each with the help of simple example. Using DecimalFormat You can use DecimalFormat too to round number to 2 decimal places. 1 2 3 4 5 6 ...
format(number); System.out.println("Formatted number: " + formattedNumber); } } java.util.Formatter类提供了一个format()方法,可以将数字格式化为字符串,并将其插入到字符串模板中。例如,可以使用Formatter类的构造函数创建一个Formatter对象,然后使用format()方法将数字格式化为字符串,并将其插入到字符串模板...
NumberFormatis a Java class for formatting and parsing numbers. WithNumberFormat, we can format and parse numbers for any locale. NumberFormatallows us to round values, set decimal separators, set the number of fraction digits, or format values according to a specific locale. ...
Overloads 展開資料表 Format(Object, StringBuffer, FieldPosition) Formats a number and appends the resulting text to the given string buffer. Format(Double, StringBuffer, FieldPosition) Formats a double to produce a string. Format(Int64, StringBuffer, FieldPosition) ...