Java I18n 简明教程
Java Internationalization - Formatting Patterns
以下是格式化模式中字符的用法。
Followings is the use of characters in formatting patterns.
Sr.No. |
Class & Description |
1 |
0 To display 0 if less digits are present. |
2 |
# To display digit ommitting leading zeroes. |
3 |
. Decimal separator. |
4 |
, Grouping separator. |
5 |
E Mantissa and Exponent separator for exponential formats. |
6 |
; Format separator. |
7 |
- Negative number prefix. |
8 |
% Shows number as percentage after multiplying with 100. |
9 |
? Shows number as mille after multiplying with 1000. |
10 |
X To mark character as number prefix/suffix. |
11 |
' To mark quote around special characters. |
Example
在此示例中，我们会按照不同的模式对数字进行格式化。
In this example, we’re formatting numbers based on different patterns.
import java.text.DecimalFormat;
public class I18NTester {
public static void main(String[] args) {
String pattern = "###.###";
double number = 123456789.123;
DecimalFormat numberFormat = new DecimalFormat(pattern);
System.out.println(number);
//pattern ###.###
System.out.println(numberFormat.format(number));
//pattern ###.#
numberFormat.applyPattern("###.#");
System.out.println(numberFormat.format(number));
//pattern ###,###.##
numberFormat.applyPattern("###,###.##");
System.out.println(numberFormat.format(number));
number = 9.34;
//pattern 000.###
numberFormat.applyPattern("000.##");
System.out.println(numberFormat.format(number));
}
}