使用前导符号格式化数字 [英] Format a number with leading sign
问题描述
如果在Java中使用前导符号格式化数字, c>,但显然肯定的数字不会显示 +
。
如何在Java中执行此操作?我当前的货币格式字符串是 \#\#\#,\#\#\#,\#\#\#,\#\#\ #,\#\#0.00
(是的,我需要格式化正面/负面的货币值)
使用负面子模式,如 DecimalFormat的javadoc < a>。
DecimalFormat fmt = new DecimalFormat(+#,## 0.00; - #);
System.out.println(fmt.format(98787654.897));
System.out.println(fmt.format(-98787654.897));
生成(在我的法语区域设置中,空格是分组分隔符,逗号是小数点分隔符):
+98 787 654,90
-98 787 654,90
How do I format in Java a number with its leading sign?
Negative numbers are correctly displayed with leading -
, but obviously positive numbers are not displayed with +
.
How to do that in Java? My current currency format string is \#\#\#,\#\#\#,\#\#\#,\#\#\#,\#\#0.00
(yes, I need to format positive/negative currency values)
Use a negative subpattern, as described in the javadoc for DecimalFormat.
DecimalFormat fmt = new DecimalFormat("+#,##0.00;-#");
System.out.println(fmt.format(98787654.897));
System.out.println(fmt.format(-98787654.897));
produces (in my French locale where space is the grouping separator and the comma is the decimal separator) :
+98 787 654,90
-98 787 654,90
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